ASTROSAT CZTI

Data Quality Report

Orbit 20160218_T01_051T01_9000000332_level2

Creation date: 2025-10-27T19:36:24.519117
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_051T01_9000000332cztM0_level2.fits modeM0/AS1T01_051T01_9000000332cztM0_level2_quad_clean.evt
Size (bytes)170,040,960264,801,600
Size162.2 MB 252.5 MB
Events in quadrant A969,4801,708,045
Events in quadrant B969,8241,724,001
Events in quadrant C968,1681,654,384
Events in quadrant D840,0081,531,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0452290
B0421220
C0416650
D0427260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139811882838056139809775419438
B1139811882838056139809775419438
C1139811882838056139809775419438
D1139811882838056139809775419438

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A203644071.998625%
B203641020.500884%
C20364950.466510%
D203641660.815164%

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 23175 20364 0 0 0.00% 0.00%
B 23175 20364 0 0 0.00% 0.00%
C 23175 20364 0 0 0.00% 0.00%
D 23175 20362 0 0 0.00% 0.00%

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 14 188 902 11.15 251 235 59.8
A 0 29 894 11.01 251 235 59.8
A 7 110 869 10.6 251 235 59.8
B 2 9 754 10.46 256 243 48.9
B 5 128 646 8.25 256 243 48.9
B 14 254 640 8.12 256 243 48.9
C 3 235 671 6.84 255 236 63.6
C 1 81 656 6.6 255 236 63.6
C 12 241 650 6.51 255 236 63.6
D 6 231 624 6.93 239 218 58.6
D 6 38 613 6.74 239 218 58.6
D 6 44 607 6.64 239 218 58.6

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