ASTROSAT CZTI

Data Quality Report

Orbit 21174

Creation date: 2024-06-27T18:24:26.007452
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_062T01_9000003132_21174cztM0_level2.evt modeM0/AS1A05_062T01_9000003132_21174cztM0_level2_quad_clean.evt
Size (bytes)400,377,60067,570,560
Size381.8 MB 64.4 MB
Events in quadrant A2,427,716440,007
Events in quadrant B2,619,721441,731
Events in quadrant C2,368,729419,570
Events in quadrant D4,380,171404,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104601
B0109611
C0102261
D0163281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4841450.929560%
B4841631.301384%
C4841671.384012%
D48412304.751084%

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 6066 4842 1 1 0.02% 0.02%
B 6066 4842 13 13 0.21% 0.27%
C 6066 4842 0 0 0.00% 0.00%
D 6066 4842 194 194 3.20% 4.01%

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 10 229 49089 393.76 614 602 123.1
A 8 6 6329 46.51 614 602 123.1
A 13 254 6005 43.88 614 602 123.1
B 3 64 35041 293.56 612 598 117.3
B 0 230 31498 263.36 612 598 117.3
B 0 182 29358 245.12 612 598 117.3
C 14 238 93139 684.58 577 580 135.2
C 3 233 17047 121.79 577 580 135.2
C 10 222 4603 29.75 577 580 135.2
D 1 20 1779264 12687.09 578 561 140.2
D 14 34 155045 1101.9 578 561 140.2
D 13 153 113418 804.98 578 561 140.2

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