ASTROSAT CZTI

Data Quality Report

Orbit 34075

Creation date: 2024-06-27T20:56:14.225231
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/AS1C07_001T04_9000004868_34075cztM0_level2.evt modeM0/AS1C07_001T04_9000004868_34075cztM0_level2_quad_clean.evt
Size (bytes)359,547,84066,116,160
Size342.9 MB 63.1 MB
Events in quadrant A1,800,047469,625
Events in quadrant B3,179,532436,654
Events in quadrant C2,817,517429,314
Events in quadrant D2,835,801400,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212
B0224
C0214
D0226

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013148
B013250
C013258
D013349

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130455201
B02340611426
C0196818921
D0204349382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A389820.051308%
B36601835.000000%
C37311854.958456%
D3701842.269657%

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 8517 4160 0 0 0.00% 0.00%
B 8088 3804 123 123 1.52% 3.23%
C 8413 3909 166 166 1.97% 4.25%
D 8390 3863 57 57 0.68% 1.48%

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 13 254 7703 76.91 463 455 94.2
A 13 6 5384 52.3 463 455 94.2
A 3 137 4407 41.93 463 455 94.2
B 5 31 876242 10783.08 427 416 81.2
B 5 15 207310 2547.26 427 416 81.2
B 5 172 178848 2196.84 427 416 81.2
C 0 10 404835 4332.45 409 412 93.3
C 0 207 372713 3988.34 409 412 93.3
C 3 233 270282 2891.03 409 412 93.3
D 8 195 776378 7590.6 415 402 102.2
D 13 249 160427 1565.36 415 402 102.2
D 2 250 132036 1287.64 415 402 102.2

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