ASTROSAT CZTI

Data Quality Report

Orbit 34493

Creation date: 2022-02-13T17:23:04.496818
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/AS1A05_118T04_9000004926_34493cztM0_level2.evt modeM0/AS1A05_118T04_9000004926_34493cztM0_level2_quad_clean.evt
Size (bytes)313,378,56038,534,400
Size298.9 MB 36.7 MB
Events in quadrant A1,936,262230,665
Events in quadrant B2,451,657230,378
Events in quadrant C2,106,432224,629
Events in quadrant D2,741,499216,402

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079461
B095491
C082781
D0105291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A373960.160471%
B37391744.653651%
C3739240.641883%
D3739591.577962%

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 3739 3739 4 4 0.11% 0.11%
B 3739 3739 107 107 2.86% 2.86%
C 3739 3739 16 16 0.43% 0.43%
D 3739 3739 43 43 1.15% 1.15%

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 15 169 57581 588.15 480 471 97.1
A 10 83 20349 204.71 480 471 97.1
A 13 254 5797 54.85 480 471 97.1
B 5 172 428921 4804.3 465 454 89.2
B 0 229 70082 780.72 465 454 89.2
B 4 171 50294 558.84 465 454 89.2
C 15 214 157446 1467.5 461 466 107.0
C 0 10 87261 811.39 461 466 107.0
C 14 67 58499 542.51 461 466 107.0
D 8 195 478102 4193.86 464 451 113.9
D 14 52 86786 758.04 464 451 113.9
D 12 6 76365 666.54 464 451 113.9

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