ASTROSAT CZTI

Data Quality Report

Orbit 37363

Creation date: 2024-06-27T21:39:01.920221
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_094T20_9000005316_37363cztM0_level2.evt modeM0/AS1A10_094T20_9000005316_37363cztM0_level2_quad_clean.evt
Size (bytes)439,390,08072,437,760
Size419.0 MB 69.1 MB
Events in quadrant A1,969,639496,717
Events in quadrant B2,664,326498,114
Events in quadrant C2,027,821520,437
Events in quadrant D6,389,498411,469

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081531
B0103611
C081761
D0215971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3771190.503845%
B37711754.640679%
C3771561.485017%
D3771141537.523203%

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 3771 3771 11 11 0.29% 0.29%
B 3771 3771 135 135 3.58% 3.58%
C 3771 3771 41 41 1.09% 1.09%
D 3771 3771 1398 1398 37.07% 37.07%

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 171155 1950.88 434 426 87.5
A 13 248 98935 1125.64 434 426 87.5
A 9 143 16860 187.79 434 426 87.5
B 5 255 843453 10551.3 423 413 79.9
B 15 85 62111 772.2 423 413 79.9
B 0 213 36760 454.91 423 413 79.9
C 15 214 159073 1597.65 430 433 99.3
C 0 10 89733 899.33 430 433 99.3
C 15 208 43063 429.32 430 433 99.3
D 12 235 4154440 44493.1 381 371 93.4
D 10 253 441060 4720.1 381 371 93.4
D 2 249 141899 1515.87 381 371 93.4

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