ASTROSAT CZTI

Data Quality Report

Orbit 20170118_A02_090T01_9000000970_level2

Creation date: 2018-05-17T20:56:53.465648
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A02_090T01_9000000970cztM0_level2.evt modeM0/AS1A02_090T01_9000000970cztM0_level2_quad_clean.evt
Size (bytes)14,532,598,0802,717,614,080
Size13.5 GB 2.5 GB
Events in quadrant A100,069,60217,219,036
Events in quadrant B107,659,10117,421,240
Events in quadrant C99,503,53317,146,322
Events in quadrant D118,707,03616,127,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04362310
B04545860
C04365560
D04909640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03170
B03170
C03170
D03170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042860
B042860
C042860
D042860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21029232361.538813%
B21029238771.843627%
C21029221081.002416%
D21029250312.392388%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 242029 210318 153 153 0.06% 0.07%
B 242029 210309 412 412 0.17% 0.20%
C 242029 210319 177 177 0.07% 0.08%
D 242029 210316 2497 2497 1.03% 1.19%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 841768 156.91 25603 25116 5204.4
A 14 111 275978 48.2 25603 25116 5204.4
A 0 226 246560 42.55 25603 25116 5204.4
B 0 219 2717542 554.66 25826 25250 4854.0
B 0 214 2318594 472.47 25826 25250 4854.0
B 3 220 1301704 262.97 25826 25250 4854.0
C 4 254 1471766 252.47 24912 25162 5729.7
C 10 22 336521 54.34 24912 25162 5729.7
C 9 68 264801 41.82 24912 25162 5729.7
D 2 216 6167017 1024.65 24694 24012 5995.2
D 8 195 6126991 1017.97 24694 24012 5995.2
D 1 20 3556096 589.15 24694 24012 5995.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter