ASTROSAT CZTI

Data Quality Report

Orbit 58149

Creation date: 2026-06-30T10:03:13.157778
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_042T02_9000006586_58149cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58149cztM0_level2_quad_clean.evt
Size (bytes)787,944,96079,038,720
Size751.4 MB 75.4 MB
Events in quadrant A3,005,664677,446
Events in quadrant B13,766,950221,526
Events in quadrant C3,179,728638,533
Events in quadrant D8,714,650406,138

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132632
B0454212
C0138052
D0301852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64401011.568323%
B6440478274.254658%
C6440981.521739%
D6440230135.729814%

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 7600 6440 1 1 0.01% 0.02%
B 7599 6439 4248 4248 55.90% 65.97%
C 7600 6440 9 9 0.12% 0.14%
D 7600 6440 2064 2064 27.16% 32.05%

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 11 3 19230 97.72 769 749 189.1
A 2 143 9864 48.2 769 749 189.1
A 3 137 9162 44.49 769 749 189.1
B 10 128 11711701 122173.24 442 426 95.9
B 0 79 62661 649.24 442 426 95.9
B 5 185 48434 500.82 442 426 95.9
C 12 252 166736 824.91 739 733 201.2
C 6 223 46209 225.98 739 733 201.2
C 9 38 33802 164.33 739 733 201.2
D 12 110 5707722 31986.91 633 605 178.4
D 2 249 90375 503.14 633 605 178.4
D 8 240 83972 467.25 633 605 178.4

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