ASTROSAT CZTI

Data Quality Report

Orbit 59200

Creation date: 2026-09-07T11:36:07.999730
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/AS1T05_271T01_9000006604_59200cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59200cztM0_level2_quad_clean.evt
Size (bytes)572,728,320129,735,360
Size546.2 MB 123.7 MB
Events in quadrant A4,262,651852,127
Events in quadrant B4,580,473906,952
Events in quadrant C5,548,107815,695
Events in quadrant D6,125,991741,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191242
B0198112
C0227103
D0245632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8805951.078932%
B88061852.100840%
C88051361.544577%
D88053303.747871%

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 9150 8807 45 45 0.49% 0.51%
B 9151 8808 56 56 0.61% 0.64%
C 9150 8807 72 72 0.79% 0.82%
D 9150 8807 188 188 2.05% 2.13%

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 10 251 334632 1392.97 981 955 239.5
A 15 233 58195 238.95 981 955 239.5
A 0 24 57409 235.67 981 955 239.5
B 10 247 306997 1464.16 973 933 209.0
B 0 186 116703 553.82 973 933 209.0
B 4 236 103565 490.97 973 933 209.0
C 3 233 1204735 4602.53 961 954 261.5
C 12 252 233196 887.95 961 954 261.5
C 15 147 223211 849.78 961 954 261.5
D 12 110 1631639 6203.66 940 900 262.9
D 11 129 384960 1461.04 940 900 262.9
D 2 249 129320 488.54 940 900 262.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct