ASTROSAT CZTI

Data Quality Report

Orbit 57337

Creation date: 2026-05-04T03:24:08.535044
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_102T01_9000006572_57337cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57337cztM0_level2_quad_clean.evt
Size (bytes)503,994,24094,060,800
Size480.6 MB 89.7 MB
Events in quadrant A2,858,037639,261
Events in quadrant B3,227,829679,379
Events in quadrant C6,377,727545,208
Events in quadrant D5,688,489530,965

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013584196
B014519183
C024012475
D021680295

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111
B0110
C0111
D0111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6501210.323027%
B64961291.985837%
C647579612.293436%
D64885378.276819%

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 7570 6515 5 5 0.07% 0.08%
B 7594 6519 63 63 0.83% 0.97%
C 7564 6496 612 612 8.09% 9.42%
D 7608 6510 491 491 6.45% 7.54%

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 0 12 58714 337.41 701 684 172.0
A 3 14 17753 99.25 701 684 172.0
A 4 3 12159 66.72 701 684 172.0
B 10 16 157013 1049.33 691 665 149.0
B 5 185 104518 697.01 691 665 149.0
B 7 252 103763 691.94 691 665 149.0
C 15 224 2096550 11996.14 637 631 174.7
C 6 223 934035 5342.4 637 631 174.7
C 12 252 485693 2776.29 637 631 174.7
D 3 224 1725023 9361.43 647 618 184.2
D 5 32 558685 3029.63 647 618 184.2
D 8 240 255946 1386.12 647 618 184.2

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