ASTROSAT CZTI

Data Quality Report

Orbit 16154

Creation date: 2024-06-27T17:18:43.654385
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/AS1T02_109T01_9000002386_16154cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16154cztM0_level2_quad_clean.evt
Size (bytes)522,440,64065,966,400
Size498.2 MB 62.9 MB
Events in quadrant A3,541,415389,754
Events in quadrant B3,694,486397,466
Events in quadrant C3,541,934380,530
Events in quadrant D4,601,547374,353

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143623
B0149632
C0144262
D0177712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65201312.009202%
B65201362.085890%
C65201261.932515%
D65204747.269939%

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 7796 6522 18 18 0.23% 0.28%
B 7796 6522 12 12 0.15% 0.18%
C 7796 6522 2 2 0.03% 0.03%
D 7796 6522 381 381 4.89% 5.84%

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 15 174 120347 675.17 884 869 177.0
A 8 247 18538 99.85 884 869 177.0
A 0 226 8080 40.75 884 869 177.0
B 0 229 70794 425.8 874 856 164.3
B 5 65 66450 399.35 874 856 164.3
B 4 216 35751 212.45 874 856 164.3
C 14 238 131151 673.76 840 846 193.4
C 3 233 119091 611.4 840 846 193.4
C 0 207 11967 57.5 840 846 193.4
D 1 52 1144218 5569.71 842 819 205.3
D 7 38 147478 714.4 842 819 205.3
D 12 233 64827 311.79 842 819 205.3

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