ASTROSAT CZTI

Data Quality Report

Orbit 56185

Creation date: 2026-02-15T14:58:07.635272
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_083T04_9000006550_56185cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56185cztM0_level2_quad_clean.evt
Size (bytes)463,075,200101,871,360
Size441.6 MB 97.2 MB
Events in quadrant A5,988,732635,345
Events in quadrant B3,417,811721,221
Events in quadrant C3,319,459644,828
Events in quadrant D3,882,891606,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224872
B0148672
C0149132
D0162292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68516659.706612%
B68512083.036053%
C68521862.714536%
D68522113.079393%

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 8831 6852 455 455 5.15% 6.64%
B 8831 6852 13 13 0.15% 0.19%
C 8832 6853 25 25 0.28% 0.36%
D 8832 6853 63 63 0.71% 0.92%

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 0 250 885185 4755.79 750 731 186.0
A 7 64 671044 3604.34 750 731 186.0
A 0 212 494607 2655.62 750 731 186.0
B 10 247 89602 544.16 761 731 163.3
B 1 207 67335 407.82 761 731 163.3
B 4 171 58534 353.93 761 731 163.3
C 6 223 149233 721.33 756 748 205.8
C 12 252 95596 460.76 756 748 205.8
C 13 3 86141 414.83 756 748 205.8
D 8 240 213883 988.35 755 719 215.7
D 8 129 115669 532.98 755 719 215.7
D 12 191 103546 476.77 755 719 215.7

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