ASTROSAT CZTI

Data Quality Report

Orbit 37301

Creation date: 2024-06-27T21:38:05.996966
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_103T07_9000005302_37301cztM0_level2.evt modeM0/AS1A10_103T07_9000005302_37301cztM0_level2_quad_clean.evt
Size (bytes)391,757,76060,367,680
Size373.6 MB 57.6 MB
Events in quadrant A2,788,412361,204
Events in quadrant B2,798,654371,324
Events in quadrant C2,988,570367,470
Events in quadrant D2,916,498344,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116233
B0117692
C0119292
D0125002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547680.146092%
B5476290.529584%
C5476941.716581%
D5476971.771366%

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 7297 5477 4 4 0.05% 0.07%
B 7297 5477 18 18 0.25% 0.33%
C 7297 5477 84 84 1.15% 1.53%
D 7297 5477 99 99 1.36% 1.81%

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 10 83 268212 2079.84 636 625 128.7
A 13 6 18198 136.59 636 625 128.7
A 12 189 12563 92.79 636 625 128.7
B 12 18 106814 873.56 640 624 121.6
B 0 213 60641 493.72 640 624 121.6
B 0 221 31989 258.02 640 624 121.6
C 0 10 246909 1683.41 630 634 146.3
C 15 214 231469 1577.87 630 634 146.3
C 1 23 25403 169.31 630 634 146.3
D 2 153 170958 1128.18 620 604 151.0
D 10 253 144570 953.42 620 604 151.0
D 2 249 80721 530.58 620 604 151.0

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