ASTROSAT CZTI

Data Quality Report

Orbit 47494

Creation date: 2024-07-10T07:45:10.967678
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_089T01_9000006330_47494cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47494cztM0_level2_quad_clean.evt
Size (bytes)591,600,960127,647,360
Size564.2 MB 121.7 MB
Events in quadrant A8,331,820835,158
Events in quadrant B4,794,610852,799
Events in quadrant C4,399,844838,616
Events in quadrant D3,746,082776,469

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301591
B0196691
C0187251
D0172251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80883133.869931%
B80893834.734825%
C80891622.002720%
D8089600.741748%

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 8368 8090 4 4 0.05% 0.05%
B 8369 8091 136 136 1.63% 1.68%
C 8369 8091 94 94 1.12% 1.16%
D 8369 8091 17 17 0.20% 0.21%

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 4247123 22049.59 918 896 192.6
A 15 235 414282 2146.61 918 896 192.6
A 9 191 82622 424.38 918 896 192.6
B 5 32 564998 3022.42 921 891 186.6
B 0 200 444210 2375.25 921 891 186.6
B 0 198 63176 333.72 921 891 186.6
C 0 207 349353 1609.43 912 914 216.5
C 14 254 174671 802.58 912 914 216.5
C 12 249 130146 596.92 912 914 216.5
D 7 55 57804 247.53 911 882 230.0
D 2 234 46700 199.25 911 882 230.0
D 2 249 44391 189.21 911 882 230.0

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