ASTROSAT CZTI

Data Quality Report

Orbit 57644

Creation date: 2026-05-25T09:40:23.299608
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_125T09_9000006578_57644cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57644cztM0_level2_quad_clean.evt
Size (bytes)505,730,880100,632,960
Size482.3 MB 96.0 MB
Events in quadrant A3,524,993660,607
Events in quadrant B4,054,273717,157
Events in quadrant C5,879,601594,270
Events in quadrant D4,716,377585,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157600
B0169020
C0224270
D0188350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70162503.563284%
B70171782.536697%
C701778011.115861%
D70174095.828702%

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 7016 7016 92 92 1.31% 1.31%
B 7017 7017 22 22 0.31% 0.31%
C 7017 7017 533 533 7.60% 7.60%
D 7017 7017 315 315 4.49% 4.49%

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 7 223 509073 2686.31 765 744 189.2
A 4 3 20350 103.61 765 744 189.2
A 3 245 17941 90.88 765 744 189.2
B 0 216 733381 4589.77 756 728 159.6
B 10 247 67498 418.29 756 728 159.6
B 0 213 46838 288.86 756 728 159.6
C 15 224 2022558 10349.52 718 711 195.4
C 10 22 665484 3402.87 718 711 195.4
C 12 2 146585 746.7 718 711 195.4
D 8 240 1147297 5518.89 736 702 207.8
D 13 138 192966 925.42 736 702 207.8
D 3 12 90927 434.28 736 702 207.8

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