ASTROSAT CZTI

Data Quality Report

Orbit 29991

Creation date: 2024-06-27T20:09:31.379583
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_071T05_9000004308_29991cztM0_level2.evt modeM0/AS1A10_071T05_9000004308_29991cztM0_level2_quad_clean.evt
Size (bytes)524,845,44067,559,040
Size500.5 MB 64.4 MB
Events in quadrant A3,491,448415,471
Events in quadrant B5,150,613415,460
Events in quadrant C3,447,333392,117
Events in quadrant D3,383,285387,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141222
B0192472
C0138662
D0137032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6240610.977564%
B62401161.858974%
C6240701.121795%
D6240270.432692%

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 7540 6241 5 5 0.07% 0.08%
B 7540 6241 1 1 0.01% 0.02%
C 7540 6241 0 0 0.00% 0.00%
D 7540 6241 6 6 0.08% 0.10%

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 3 1 27261 148.61 893 880 177.5
A 8 192 22918 124.15 893 880 177.5
A 13 254 10620 54.87 893 880 177.5
B 6 159 1687510 10287.33 878 861 164.0
B 12 111 19938 116.36 878 861 164.0
B 11 111 18289 106.3 878 861 164.0
C 14 238 139647 724.5 834 841 191.6
C 3 233 37207 189.81 834 841 191.6
C 2 114 14596 71.79 834 841 191.6
D 8 195 97811 491.51 843 825 197.3
D 7 80 65886 329.72 843 825 197.3
D 2 234 20756 101.01 843 825 197.3

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