ASTROSAT CZTI

Data Quality Report

Orbit 20181222_A05_149T03_9000002590_level2

Creation date: 2018-12-26T09:38:56.170071
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/AS1A05_149T03_9000002590cztM0_level2.evt modeM0/AS1A05_149T03_9000002590cztM0_level2_quad_clean.evt
Size (bytes)1,172,923,200191,324,160
Size1.1 GB 182.5 MB
Events in quadrant A6,758,7591,269,160
Events in quadrant B7,026,0341,269,021
Events in quadrant C6,868,1961,228,635
Events in quadrant D13,936,6421,073,762

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290160
B0297400
C0287080
D0505610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138043422.477543%
B138043192.310924%
C138043432.484787%
D13804264919.190090%

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 16829 13805 17 17 0.10% 0.12%
B 16829 13805 9 9 0.05% 0.07%
C 16829 13807 0 0 0.00% 0.00%
D 16829 13804 2036 2036 12.10% 14.75%

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 15 174 128403 370.86 1715 1676 341.7
A 4 2 22129 59.86 1715 1676 341.7
A 0 226 15156 39.45 1715 1676 341.7
B 4 216 93838 289.57 1707 1669 318.3
B 7 220 79379 244.14 1707 1669 318.3
B 6 36 40138 120.86 1707 1669 318.3
C 14 238 254541 665.35 1648 1656 380.1
C 5 218 135983 353.42 1648 1656 380.1
C 5 219 25234 62.03 1648 1656 380.1
D 13 189 3381514 8457.07 1526 1493 399.7
D 1 52 2347381 5869.59 1526 1493 399.7
D 15 0 919621 2297.23 1526 1493 399.7

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