ASTROSAT CZTI

Data Quality Report

Orbit 20160219_T01_072T02_9000000336_level2

Creation date: 2017-10-31T11:43:42.838873
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/AS1T01_072T02_9000000336cztM0_level2.evt modeM0/AS1T01_072T02_9000000336cztM0_level2_quad_clean.evt
Size (bytes)5,812,217,2801,175,932,800
Size5.4 GB 1.1 GB
Events in quadrant A42,585,9547,296,508
Events in quadrant B46,061,5027,441,233
Events in quadrant C40,166,9617,213,972
Events in quadrant D40,697,0917,064,355

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B1160
C1160
D110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02044870
B02077740
C01967820
D02027690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019300
B019300
C019300
D019300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9633416761.739780%
B963325480.568866%
C963323110.322842%
D963329610.997592%

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 110106 96353 534 534 0.48% 0.55%
B 110106 96352 53 53 0.05% 0.06%
C 110106 96352 32 32 0.03% 0.03%
D 110106 96352 738 738 0.67% 0.77%

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 15 171 2914016 1480.63 10133 9967 1961.4
A 0 247 513193 256.57 10133 9967 1961.4
A 0 1 85594 38.56 10133 9967 1961.4
B 5 68 4436548 2345.47 10538 10334 1887.1
B 0 234 614071 319.92 10538 10334 1887.1
B 0 198 199109 100.03 10538 10334 1887.1
C 9 85 519145 234.83 10004 10055 2168.0
C 10 82 191830 83.85 10004 10055 2168.0
C 10 34 82385 33.36 10004 10055 2168.0
D 2 31 1986680 892.3 9896 9677 2215.6
D 13 53 312013 136.46 9896 9677 2215.6
D 10 199 284032 123.83 9896 9677 2215.6

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