ASTROSAT CZTI

Data Quality Report

Orbit 21347

Creation date: 2024-06-27T18:26:51.027176
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_226T05_9000003148_21347cztM0_level2.evt modeM0/AS1A05_226T05_9000003148_21347cztM0_level2_quad_clean.evt
Size (bytes)443,923,200128,862,720
Size423.4 MB 122.9 MB
Events in quadrant A3,178,965881,664
Events in quadrant B3,264,781888,049
Events in quadrant C3,053,231846,323
Events in quadrant D3,508,740836,951

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133332
B0137092
C0132182
D0147112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6450140.217054%
B6450250.387597%
C6450320.496124%
D64501071.658915%

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 7620 6452 2 2 0.03% 0.03%
B 7620 6452 8 8 0.10% 0.12%
C 7620 6452 0 0 0.00% 0.00%
D 7620 6452 104 104 1.36% 1.61%

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 5 168 72810 457.87 791 776 157.3
A 15 174 27876 172.26 791 776 157.3
A 11 47 11721 69.57 791 776 157.3
B 0 230 82241 554.57 782 763 146.9
B 0 189 40998 273.86 782 763 146.9
B 3 64 28218 186.87 782 763 146.9
C 14 238 119599 694.7 744 748 171.1
C 3 9 29495 168.03 744 748 171.1
C 13 61 5303 26.62 744 748 171.1
D 1 52 534402 2907.29 760 737 183.6
D 7 38 36777 196.34 760 737 183.6
D 2 234 26563 140.69 760 737 183.6

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