ASTROSAT CZTI

Data Quality Report

Orbit 46919

Creation date: 2024-06-27T23:29:26.129279
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/AS1A13_053T01_9000006282_46919cztM0_level2.fits modeM0/AS1A13_053T01_9000006282_46919cztM0_level2_quad_clean.evt
Size (bytes)622,471,680106,202,880
Size593.6 MB 101.3 MB
Events in quadrant A6,377,746718,476
Events in quadrant B8,592,255661,897
Events in quadrant C2,932,711718,607
Events in quadrant D4,604,939635,487

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229511
B0304553
C0139481
D0183991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69021752.535497%
B6902118017.096494%
C6902390.565054%
D69024035.838887%

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 7737 6902 22 22 0.28% 0.32%
B 7737 6902 693 693 8.96% 10.04%
C 7737 6902 1 1 0.01% 0.01%
D 7737 6902 348 348 4.50% 5.04%

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 83 3375621 21618.51 752 736 156.1
A 14 248 41681 262.28 752 736 156.1
A 7 3 24091 149.61 752 736 156.1
B 3 112 5619669 39303.67 717 693 143.0
B 5 172 45778 315.36 717 693 143.0
B 0 245 37691 258.79 717 693 143.0
C 14 254 12790 67.72 750 753 177.7
C 13 61 4772 22.61 750 753 177.7
C 3 233 1660 5.1 750 753 177.7
D 13 249 1113775 6015.68 737 714 185.0
D 10 181 175510 944.71 737 714 185.0
D 2 249 169790 913.79 737 714 185.0

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