ASTROSAT CZTI

Data Quality Report

Orbit 58440

Creation date: 2026-07-17T07:34:30.087710
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_045T01_9000006590_58440cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58440cztM0_level2_quad_clean.evt
Size (bytes)414,360,000101,136,960
Size395.2 MB 96.5 MB
Events in quadrant A3,235,931671,977
Events in quadrant B3,530,420720,333
Events in quadrant C4,003,925629,410
Events in quadrant D4,056,348582,134

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141492
B0149572
C0164742
D0167312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6577570.866657%
B65771852.812833%
C65772383.618671%
D65772443.709898%

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 7832 6578 21 21 0.27% 0.32%
B 7832 6578 107 107 1.37% 1.63%
C 7832 6578 163 163 2.08% 2.48%
D 7832 6578 190 190 2.43% 2.89%

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 3 62 131396 693.95 754 736 188.3
A 12 114 98173 517.5 754 736 188.3
A 10 251 38559 200.88 754 736 188.3
B 4 201 204292 1270.27 745 716 160.3
B 7 252 118772 736.64 745 716 160.3
B 10 246 100187 620.68 745 716 160.3
C 1 12 552886 2777.0 718 716 198.8
C 14 245 174466 873.83 718 716 198.8
C 12 249 167903 840.83 718 716 198.8
D 8 240 685922 3430.43 707 678 199.8
D 6 239 283268 1414.69 707 678 199.8
D 12 248 71821 356.15 707 678 199.8

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