ASTROSAT CZTI

Data Quality Report

Orbit 55984

Creation date: 2026-02-06T09:01:41.100786
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_066T02_9000006546_55984cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55984cztM0_level2_quad_clean.evt
Size (bytes)439,398,72094,265,280
Size419.0 MB 89.9 MB
Events in quadrant A4,517,056598,391
Events in quadrant B4,600,288653,540
Events in quadrant C3,140,037595,782
Events in quadrant D3,509,515558,830

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179518
B0181142
C0141042
D0150262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64113956.161285%
B64112944.585868%
C6411510.795508%
D6412741.154086%

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 8706 6413 323 323 3.71% 5.04%
B 8706 6413 225 225 2.58% 3.51%
C 8706 6412 31 31 0.36% 0.48%
D 8707 6413 39 39 0.45% 0.61%

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 12 115 718194 4212.36 684 667 170.3
A 15 32 460140 2697.41 684 667 170.3
A 7 64 190335 1113.48 684 667 170.3
B 5 172 1478555 10105.06 687 662 146.3
B 0 171 99569 676.27 687 662 146.3
B 0 199 77372 524.5 687 662 146.3
C 12 252 225244 1187.76 680 672 189.1
C 14 80 134081 705.6 680 672 189.1
C 9 38 62013 324.43 680 672 189.1
D 11 129 419782 2166.52 672 643 193.5
D 2 249 133999 689.31 672 643 193.5
D 6 239 49547 252.78 672 643 193.5

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