ASTROSAT CZTI

Data Quality Report

Orbit 58355

Creation date: 2026-07-11T14:34:27.523133
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_044T03_9000006588_58355cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58355cztM0_level2_quad_clean.evt
Size (bytes)518,999,04083,617,920
Size495.0 MB 79.7 MB
Events in quadrant A3,358,961632,366
Events in quadrant B4,776,724661,724
Events in quadrant C7,078,438194,160
Events in quadrant D3,470,519574,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147971
B0186823
C0258021
D0150951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67301732.570579%
B67304706.983655%
C6730473370.326895%
D67301201.783061%

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 7480 6730 21 21 0.28% 0.31%
B 7480 6730 211 211 2.82% 3.14%
C 7480 6730 761 761 10.17% 11.31%
D 7480 6730 22 22 0.29% 0.33%

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 8 246 135797 740.56 743 722 182.4
A 8 230 75407 409.47 743 722 182.4
A 12 80 70601 383.12 743 722 182.4
B 10 128 793957 5118.22 723 695 155.0
B 5 185 295573 1902.59 723 695 155.0
B 6 255 230267 1481.23 723 695 155.0
C 15 148 5842462 74466.94 280 277 78.5
C 12 252 32582 411.77 280 277 78.5
C 15 164 21422 269.52 280 277 78.5
D 8 160 129748 639.91 719 688 201.7
D 2 31 108198 533.06 719 688 201.7
D 11 129 102295 503.79 719 688 201.7

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