ASTROSAT CZTI

Data Quality Report

Orbit 55154

Creation date: 2025-12-08T11:09:49.076207
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_022T16_9000006532_55154cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55154cztM0_level2_quad_clean.evt
Size (bytes)518,155,20088,876,800
Size494.2 MB 84.8 MB
Events in quadrant A3,850,907602,425
Events in quadrant B3,760,202621,176
Events in quadrant C7,350,809495,978
Events in quadrant D3,730,354532,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159102
B0159582
C0260682
D0157542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62831662.642050%
B62834166.621041%
C6283124919.879039%
D62822233.549825%

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 7418 6284 163 163 2.20% 2.59%
B 7418 6284 324 324 4.37% 5.16%
C 7418 6284 1381 1381 18.62% 21.98%
D 7417 6283 204 204 2.75% 3.25%

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 3 78 1101412 6662.96 662 646 165.2
A 12 115 146192 880.99 662 646 165.2
A 13 254 12947 74.46 662 646 165.2
B 2 249 1044487 7483.18 647 623 139.5
B 5 185 41819 295.32 647 623 139.5
B 4 81 33764 237.58 647 623 139.5
C 9 38 3735679 21745.81 623 618 171.8
C 13 3 615738 3581.28 623 618 171.8
C 1 16 146931 851.85 623 618 171.8
D 11 129 902439 4960.09 637 609 181.8
D 2 252 120998 662.14 637 609 181.8
D 5 173 48419 262.96 637 609 181.8

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