ASTROSAT CZTI

Data Quality Report

Orbit 56367

Creation date: 2026-02-27T21:14:47.181380
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/AS1A14_083T05_9000006554_56367cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56367cztM0_level2_quad_clean.evt
Size (bytes)1,301,590,08067,881,600
Size1.2 GB 64.7 MB
Events in quadrant A15,307,453237,776
Events in quadrant B6,802,166661,703
Events in quadrant C6,278,485632,398
Events in quadrant D19,216,1182,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505200
B0253650
C0239000
D0623782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7477516969.132005%
B7478120016.047071%
C74786128.184006%
D7477745399.679016%

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 7477 7476 4960 4960 66.34% 66.35%
B 7479 7479 889 889 11.89% 11.89%
C 7479 7479 593 593 7.93% 7.93%
D 7477 7476 7178 7178 96.00% 96.01%

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 12 3 10707550 79177.53 537 524 135.2
A 12 194 1244710 9200.65 537 524 135.2
A 3 62 362558 2677.21 537 524 135.2
B 4 206 3139290 19750.2 739 714 158.9
B 5 185 136375 853.68 739 714 158.9
B 4 21 118167 739.1 739 714 158.9
C 15 230 1053748 5103.07 750 744 206.3
C 13 3 935686 4530.92 750 744 206.3
C 12 252 751591 3638.76 750 744 206.3
D 8 129 17172819 222098.04 265 252 77.3
D 13 153 264572 3418.53 265 252 77.3
D 2 249 173063 2235.02 265 252 77.3

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