ASTROSAT CZTI

Data Quality Report

Orbit 58289

Creation date: 2026-07-07T06:01:48.561792
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_044T03_9000006588_58289cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58289cztM0_level2_quad_clean.evt
Size (bytes)3,110,676,480257,921,280
Size2.9 GB 246.0 MB
Events in quadrant A13,966,3562,227,244
Events in quadrant B53,516,911525,507
Events in quadrant C11,224,4932,164,680
Events in quadrant D34,573,2551,226,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04920
C04920
D04920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0582814
B01755844
C0519945
D01194894

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241786012.485731%
B241791959781.049671%
C241782631.087766%
D24178920038.051121%

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 26078 24182 493 493 1.89% 2.04%
B 26079 24179 17966 17966 68.89% 74.30%
C 26078 24181 174 174 0.67% 0.72%
D 26078 24181 8799 8799 33.74% 36.39%

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 12 1178909 1870.4 2557 2490 629.0
A 3 14 708507 1122.5 2557 2490 629.0
A 12 114 641877 1016.57 2557 2490 629.0
B 10 128 45738682 165084.12 1310 1260 277.1
B 6 255 695332 2505.18 1310 1260 277.1
B 4 158 325722 1171.11 1310 1260 277.1
C 13 3 354180 513.87 2509 2488 684.4
C 6 223 318224 461.34 2509 2488 684.4
C 15 199 294376 426.49 2509 2488 684.4
D 12 110 24305734 42318.52 2027 1941 574.3
D 2 249 836677 1453.47 2027 1941 574.3
D 2 120 354800 614.41 2027 1941 574.3

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