ASTROSAT CZTI

Data Quality Report

Orbit 17317

Creation date: 2024-06-27T17:34:55.461665
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_010T02_9000002556_17317cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17317cztM0_level2_quad_clean.evt
Size (bytes)608,754,240115,413,120
Size580.6 MB 110.1 MB
Events in quadrant A4,270,388744,275
Events in quadrant B4,115,361747,012
Events in quadrant C4,079,906701,667
Events in quadrant D5,376,626694,560

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184712
B0180842
C0179952
D0218472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87421121.281171%
B87421711.956074%
C87421922.196294%
D87422873.283002%

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 9357 8745 0 0 0.00% 0.00%
B 9357 8745 0 0 0.00% 0.00%
C 9357 8745 0 0 0.00% 0.00%
D 9357 8745 169 169 1.81% 1.93%

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 13 210 275431 1306.98 1039 1014 210.0
A 0 226 8928 37.69 1039 1014 210.0
A 3 137 8242 34.43 1039 1014 210.0
B 12 111 25086 119.7 1038 1012 201.1
B 0 230 24432 116.45 1038 1012 201.1
B 11 111 21774 103.23 1038 1012 201.1
C 14 238 153083 650.17 994 1000 233.9
C 3 233 20656 84.03 994 1000 233.9
C 8 128 15256 60.95 994 1000 233.9
D 5 222 1090263 4490.27 1001 970 242.6
D 11 176 252501 1036.86 1001 970 242.6
D 1 52 193603 794.07 1001 970 242.6

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