ASTROSAT CZTI

Data Quality Report

Orbit 46780

Creation date: 2024-06-27T23:27:33.061527
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/AS1A13_053T01_9000006266_46780cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46780cztM0_level2_quad_clean.evt
Size (bytes)437,382,720100,535,040
Size417.1 MB 95.9 MB
Events in quadrant A5,909,709654,361
Events in quadrant B3,670,248705,395
Events in quadrant C2,734,788668,089
Events in quadrant D3,410,933598,835

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212481
B0149291
C0124561
D0144851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59853636.065163%
B5985871.453634%
C5985110.183793%
D59852373.959900%

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 7205 5985 182 182 2.53% 3.04%
B 7205 5985 34 34 0.47% 0.57%
C 7205 5985 0 0 0.00% 0.00%
D 7205 5986 225 225 3.12% 3.76%

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 2926954 21730.72 654 641 134.7
A 13 248 369123 2736.34 654 641 134.7
A 9 191 32507 236.64 654 641 134.7
B 3 112 852285 6586.62 668 647 129.3
B 5 172 92078 707.13 668 647 129.3
B 0 245 28392 214.58 668 647 129.3
C 1 241 106463 694.22 657 659 152.4
C 12 249 25961 166.02 657 659 152.4
C 3 233 25803 164.98 657 659 152.4
D 10 181 311340 1946.8 647 627 159.6
D 13 249 255165 1594.83 647 627 159.6
D 2 249 219762 1373.01 647 627 159.6

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