ASTROSAT CZTI

Data Quality Report

Orbit 52458

Creation date: 2025-06-27T18:59:39.860173
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/AS1A13_037T01_9000006476_52458cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52458cztM0_level2_quad_clean.evt
Size (bytes)885,407,04083,387,520
Size844.4 MB 79.5 MB
Events in quadrant A5,656,087601,328
Events in quadrant B3,648,820743,483
Events in quadrant C4,913,376633,476
Events in quadrant D17,988,11736,886

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218860
B0159640
C0196310
D0584200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7320106814.590164%
B7321230.314165%
C73212663.633383%
D7321699095.478760%

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 7319 7319 885 885 12.09% 12.09%
B 7320 7320 9 9 0.12% 0.12%
C 7320 7320 260 260 3.55% 3.55%
D 7320 7320 6872 6872 93.88% 93.88%

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 4 61 2307558 12826.62 716 696 179.8
A 13 248 273238 1515.39 716 696 179.8
A 8 249 77197 425.36 716 696 179.8
B 4 81 310897 1863.48 772 745 166.4
B 4 171 87978 524.12 772 745 166.4
B 10 247 36093 212.38 772 745 166.4
C 13 3 575122 2839.85 740 732 202.3
C 15 231 544916 2690.5 740 732 202.3
C 2 12 457251 2257.08 740 732 202.3
D 15 93 15042004 200894.2 260 249 74.9
D 6 42 1434552 19156.22 260 249 74.9
D 2 136 196966 2627.31 260 249 74.9

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