ASTROSAT CZTI

Data Quality Report

Orbit 56436

Creation date: 2026-03-04T12:04:37.934696
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_56436cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56436cztM0_level2_quad_clean.evt
Size (bytes)505,825,92095,238,720
Size482.4 MB 90.8 MB
Events in quadrant A4,986,046582,383
Events in quadrant B4,486,101662,525
Events in quadrant C4,397,444602,460
Events in quadrant D4,324,548561,564

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196272
B0180172
C0177222
D0176542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A681378511.522090%
B68136128.982827%
C68133815.592250%
D68133495.122560%

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 7748 6814 676 676 8.72% 9.92%
B 7748 6814 287 287 3.70% 4.21%
C 7748 6814 237 237 3.06% 3.48%
D 7748 6813 267 267 3.45% 3.92%

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 12 3 1703656 9708.86 713 695 175.4
A 12 194 227093 1290.73 713 695 175.4
A 0 8 170367 967.33 713 695 175.4
B 4 206 1166954 7564.31 721 695 154.2
B 0 231 175093 1131.14 721 695 154.2
B 10 247 77773 499.92 721 695 154.2
C 12 252 408410 2064.46 728 720 197.5
C 12 254 396937 2006.36 728 720 197.5
C 1 16 325382 1644.02 728 720 197.5
D 2 31 333420 1662.54 716 683 200.1
D 2 249 217984 1085.76 716 683 200.1
D 8 129 193591 963.88 716 683 200.1

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