ASTROSAT CZTI

Data Quality Report

Orbit 47508

Creation date: 2024-07-11T06:18:41.794991
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_037T05_9000006332_47508cztM0_level2.fits modeM0/AS1A13_037T05_9000006332_47508cztM0_level2_quad_clean.evt
Size (bytes)553,728,960128,992,320
Size528.1 MB 123.0 MB
Events in quadrant A7,994,499848,306
Events in quadrant B4,351,046888,903
Events in quadrant C3,448,404848,062
Events in quadrant D4,091,056771,341

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289031
B0184721
C0162731
D0178961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78963844.863222%
B78971301.646195%
C7896160.202634%
D7896941.190476%

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 8491 7897 38 38 0.45% 0.48%
B 8492 7898 50 50 0.59% 0.63%
C 8491 7897 1 1 0.01% 0.01%
D 8491 7897 54 54 0.64% 0.68%

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 4309861 23246.78 889 872 185.4
A 13 248 161612 867.18 889 872 185.4
A 9 191 52137 276.57 889 872 185.4
B 5 32 343748 1940.33 892 864 176.7
B 0 200 271729 1532.79 892 864 176.7
B 0 198 144716 814.04 892 864 176.7
C 1 3 16391 75.19 876 881 206.3
C 13 61 5950 24.57 876 881 206.3
C 14 254 5389 21.85 876 881 206.3
D 2 249 307637 1414.52 869 844 216.9
D 7 55 133845 613.22 869 844 216.9
D 2 165 113609 519.92 869 844 216.9

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