ASTROSAT CZTI

Data Quality Report

Orbit 56449

Creation date: 2026-03-05T10:45:18.444650
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_56449cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56449cztM0_level2_quad_clean.evt
Size (bytes)671,448,96077,739,840
Size640.3 MB 74.1 MB
Events in quadrant A5,087,637511,468
Events in quadrant B7,195,156508,044
Events in quadrant C3,568,354530,826
Events in quadrant D8,540,741386,099

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193351
B0255301
C0147561
D0295681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A597684714.173360%
B5976144824.230254%
C59763656.107764%
D5976173128.965863%

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 7126 5976 776 776 10.89% 12.99%
B 7126 5976 1033 1033 14.50% 17.29%
C 7126 5976 283 283 3.97% 4.74%
D 7125 5975 1795 1795 25.19% 30.04%

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 2143742 14256.28 608 593 150.3
A 12 194 281962 1871.67 608 593 150.3
A 4 249 137914 913.46 608 593 150.3
B 5 172 3178446 25583.22 585 564 124.2
B 4 206 1465654 11794.56 585 564 124.2
B 15 33 65653 523.99 585 564 124.2
C 12 254 722296 4272.07 618 613 168.9
C 12 252 170500 1005.66 618 613 168.9
C 1 16 169517 999.84 618 613 168.9
D 5 113 4174719 26178.86 557 531 159.4
D 8 129 1124594 7049.68 557 531 159.4
D 2 249 649165 4067.98 557 531 159.4

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