ASTROSAT CZTI

Data Quality Report

Orbit 55083

Creation date: 2025-12-03T14:06:23.758808
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_025T01_9000006530_55083cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55083cztM0_level2_quad_clean.evt
Size (bytes)2,915,795,520609,376,320
Size2.7 GB 581.1 MB
Events in quadrant A29,981,6743,881,766
Events in quadrant B19,719,9934,406,310
Events in quadrant C19,699,4463,893,074
Events in quadrant D35,243,3453,348,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011972714
B0898758
C09092811
D013525810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08700
B08700
C08700
D08700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4253829676.974940%
B425396201.457486%
C425394341.020240%
D42539429610.098968%

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 49204 42543 2367 2367 4.81% 5.56%
B 49205 42542 94 94 0.19% 0.22%
C 49205 42543 189 189 0.38% 0.44%
D 49205 42543 3894 3894 7.91% 9.15%

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 15 32 11173131 10184.11 4503 4395 1096.7
A 0 8 666585 603.81 4503 4395 1096.7
A 4 78 238688 213.64 4503 4395 1096.7
B 5 185 572150 572.11 4587 4393 992.4
B 10 247 269759 267.4 4587 4393 992.4
B 10 245 224384 221.68 4587 4393 992.4
C 9 38 504220 407.13 4515 4481 1227.5
C 13 3 459804 370.95 4515 4481 1227.5
C 12 252 359717 289.41 4515 4481 1227.5
D 11 129 6484494 5358.26 4286 4097 1209.4
D 15 94 6076615 5021.01 4286 4097 1209.4
D 2 249 1899470 1567.17 4286 4097 1209.4

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