ASTROSAT CZTI

Data Quality Report

Orbit 31525

Creation date: 2024-06-27T20:29:33.608363
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/AS1A10_053T39_9000004596_31525cztM0_level2.evt modeM0/AS1A10_053T39_9000004596_31525cztM0_level2_quad_clean.evt
Size (bytes)619,355,520105,949,440
Size590.7 MB 101.0 MB
Events in quadrant A3,806,884699,410
Events in quadrant B5,320,235708,881
Events in quadrant C4,896,206684,292
Events in quadrant D4,298,900667,129

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155472
B0201352
C0189653
D0170082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64321692.627488%
B64331442.238458%
C64323825.939055%
D64321462.269900%

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 8852 6432 76 76 0.86% 1.18%
B 8853 6433 2 2 0.02% 0.03%
C 8852 6432 42 42 0.47% 0.65%
D 8852 6433 45 45 0.51% 0.70%

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 0 13 493089 2864.81 859 844 171.8
A 13 254 11497 62.0 859 844 171.8
A 3 137 8281 43.28 859 844 171.8
B 6 159 1791412 10878.91 866 847 164.6
B 4 80 66070 396.27 866 847 164.6
B 0 190 22249 130.03 866 847 164.6
C 3 233 1426414 7245.64 842 851 196.7
C 14 238 134338 678.47 842 851 196.7
C 2 114 15143 72.64 842 851 196.7
D 8 195 801564 4030.61 844 823 198.7
D 2 250 112765 563.47 844 823 198.7
D 13 249 57116 283.36 844 823 198.7

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