ASTROSAT CZTI

Data Quality Report

Orbit 25456

Creation date: 2024-06-27T19:17:51.863073
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/AS1A09_085T02_9000003716_25456cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25456cztM0_level2_quad_clean.evt
Size (bytes)506,197,44069,468,480
Size482.7 MB 66.3 MB
Events in quadrant A3,414,663417,583
Events in quadrant B3,251,588422,317
Events in quadrant C3,571,594402,064
Events in quadrant D4,637,330394,105

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144710
B0137460
C0147100
D0181610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6704290.432578%
B6704310.462411%
C67041382.058473%
D67042994.460024%

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 7694 6705 0 0 0.00% 0.00%
B 7694 6705 0 0 0.00% 0.00%
C 7694 6705 46 46 0.60% 0.69%
D 7694 6705 319 319 4.15% 4.76%

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 203608 1211.91 833 815 167.3
A 13 254 10721 59.2 833 815 167.3
A 3 137 7664 40.93 833 815 167.3
B 12 111 19610 119.49 826 803 157.4
B 11 111 17509 106.14 826 803 157.4
B 14 111 15984 96.45 826 803 157.4
C 9 54 353681 1917.27 790 795 184.1
C 14 238 127313 687.39 790 795 184.1
C 2 16 11203 56.55 790 795 184.1
D 1 52 1448910 7473.11 795 770 193.8
D 8 195 93300 477.5 795 770 193.8
D 7 238 47013 238.64 795 770 193.8

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