ASTROSAT CZTI

Data Quality Report

Orbit 13387

Creation date: 2024-06-27T16:40:01.470170
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/AS1A04_103T01_9000001988_13387cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13387cztM0_level2_quad_clean.evt
Size (bytes)470,485,44078,174,720
Size448.7 MB 74.6 MB
Events in quadrant A3,340,699484,487
Events in quadrant B3,523,074494,136
Events in quadrant C3,489,137478,620
Events in quadrant D3,457,859459,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141873
B0146732
C0145382
D0146492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6453881.363707%
B6453961.487680%
C6453801.239733%
D6453941.456687%

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 7719 6455 0 0 0.00% 0.00%
B 7719 6455 1 1 0.01% 0.02%
C 7719 6455 3 3 0.04% 0.05%
D 7719 6455 14 14 0.18% 0.22%

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 15 69 21492 121.47 858 842 170.0
A 8 15 8697 46.2 858 842 170.0
A 1 162 7992 42.06 858 842 170.0
B 10 245 32766 200.66 858 840 159.1
B 0 85 30744 187.95 858 840 159.1
B 0 214 30045 183.55 858 840 159.1
C 14 220 140649 748.76 824 830 186.7
C 3 233 129370 688.36 824 830 186.7
C 13 61 5993 27.65 824 830 186.7
D 1 52 238819 1234.08 818 796 192.9
D 13 249 51683 263.83 818 796 192.9
D 9 85 30779 155.45 818 796 192.9

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