ASTROSAT CZTI

Data Quality Report

Orbit 18685

Creation date: 2024-06-27T17:53:39.534602
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_226T06_9000002792_18685cztM0_level2.evt modeM0/AS1A05_226T06_9000002792_18685cztM0_level2_quad_clean.evt
Size (bytes)545,806,08097,369,920
Size520.5 MB 92.9 MB
Events in quadrant A3,644,809642,580
Events in quadrant B3,641,236646,056
Events in quadrant C3,604,120610,632
Events in quadrant D5,189,809586,978

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150852
B0150162
C0147812
D0197422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66301442.171946%
B66311532.307344%
C66301812.730015%
D66303405.128205%

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 9025 6630 1 1 0.01% 0.02%
B 9026 6631 5 5 0.06% 0.08%
C 9025 6630 2 2 0.02% 0.03%
D 9025 6630 254 254 2.81% 3.83%

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 6 16 48586 257.54 932 916 185.1
A 13 254 10624 52.45 932 916 185.1
A 0 226 8246 39.6 932 916 185.1
B 10 245 20874 115.95 913 893 172.3
B 12 111 19954 110.61 913 893 172.3
B 10 247 19122 105.78 913 893 172.3
C 14 238 138597 680.68 875 884 202.3
C 9 54 49217 238.9 875 884 202.3
C 13 61 6069 25.63 875 884 202.3
D 7 238 1346831 6355.14 888 865 211.8
D 1 52 357418 1683.51 888 865 211.8
D 7 96 102723 480.94 888 865 211.8

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