ASTROSAT CZTI

Data Quality Report

Orbit 56867

Creation date: 2026-04-02T11:48:55.879270
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_083T03_9000006562_56867cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56867cztM0_level2_quad_clean.evt
Size (bytes)414,930,24091,278,720
Size395.7 MB 87.1 MB
Events in quadrant A3,159,980602,648
Events in quadrant B3,917,060624,125
Events in quadrant C3,222,375576,726
Events in quadrant D4,570,992522,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140281
B0162011
C0141571
D0180131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62821382.196753%
B62823074.886979%
C62831352.148655%
D62824266.781280%

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 7262 6282 104 104 1.43% 1.66%
B 7262 6282 162 162 2.23% 2.58%
C 7263 6283 86 86 1.18% 1.37%
D 7262 6282 381 381 5.25% 6.06%

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 13 153 307966 1844.7 675 659 166.6
A 3 62 90689 540.43 675 659 166.6
A 7 64 48131 284.96 675 659 166.6
B 5 185 737533 5204.2 655 630 141.6
B 10 16 396724 2797.32 655 630 141.6
B 0 173 78727 551.54 655 630 141.6
C 13 3 350289 1913.71 661 654 182.7
C 1 16 186502 1017.23 661 654 182.7
C 14 96 24515 130.6 661 654 182.7
D 2 249 1299927 7161.97 642 613 181.4
D 8 240 308055 1694.66 642 613 181.4
D 7 96 290443 1597.58 642 613 181.4

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