ASTROSAT CZTI

Data Quality Report

Orbit 17977

Creation date: 2024-06-27T17:43:38.483556
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/AS1C04_009T03_9000002674_17977cztM0_level2.evt modeM0/AS1C04_009T03_9000002674_17977cztM0_level2_quad_clean.evt
Size (bytes)265,443,84076,867,200
Size253.1 MB 73.3 MB
Events in quadrant A1,802,484528,049
Events in quadrant B1,954,708534,449
Events in quadrant C1,818,497508,538
Events in quadrant D2,212,877497,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077651
B082951
C077542
D090931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3667501.363512%
B3667691.881647%
C3666571.554828%
D36661794.882706%

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 5007 3668 4 4 0.08% 0.11%
B 5007 3668 12 12 0.24% 0.33%
C 5006 3667 0 0 0.00% 0.00%
D 5006 3667 147 147 2.94% 4.01%

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 38762 406.04 459 449 94.4
A 0 226 4047 38.13 459 449 94.4
A 12 194 3392 31.19 459 449 94.4
B 7 220 124119 1434.96 461 450 86.2
B 0 219 9815 108.66 461 450 86.2
B 12 111 9564 105.75 461 450 86.2
C 14 238 70719 686.59 441 443 102.4
C 3 233 14689 139.18 441 443 102.4
C 0 207 4499 39.63 441 443 102.4
D 7 238 436472 3685.19 437 428 118.3
D 7 38 25062 208.19 437 428 118.3
D 10 70 18709 154.5 437 428 118.3

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