ASTROSAT CZTI

Data Quality Report

Orbit 19780

Creation date: 2024-06-27T18:07:16.047876
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_155T04_9000002956_19780cztM0_level2.evt modeM0/AS1A05_155T04_9000002956_19780cztM0_level2_quad_clean.evt
Size (bytes)470,301,12069,753,600
Size448.5 MB 66.5 MB
Events in quadrant A2,601,371446,965
Events in quadrant B2,527,311454,742
Events in quadrant C5,800,873404,695
Events in quadrant D2,946,996427,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113241
B0110171
C0208561
D0124541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5394761.408973%
B5395751.390176%
C539599618.461538%
D53951973.651529%

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 5784 5395 5 5 0.09% 0.09%
B 5785 5396 0 0 0.00% 0.00%
C 5785 5396 635 635 10.98% 11.77%
D 5785 5396 126 126 2.18% 2.34%

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 4 2 119587 915.87 637 624 129.9
A 9 143 16035 118.65 637 624 129.9
A 11 29 8348 59.47 637 624 129.9
B 4 216 17532 136.97 634 617 123.5
B 0 230 15432 119.97 634 617 123.5
B 12 111 15356 119.35 634 617 123.5
C 3 233 3425951 25085.32 578 582 136.5
C 14 238 89764 653.11 578 582 136.5
C 7 247 28340 203.28 578 582 136.5
D 1 52 430304 2873.01 611 592 149.6
D 7 238 139466 928.5 611 592 149.6
D 12 218 48668 321.43 611 592 149.6

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