ASTROSAT CZTI

Data Quality Report

Orbit 09139

Creation date: 2024-06-27T15:41:47.165406
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/AS1G07_046T01_9000001274_09139cztM0_level2.evt modeM0/AS1G07_046T01_9000001274_09139cztM0_level2_quad_clean.evt
Size (bytes)520,456,32073,468,800
Size496.3 MB 70.1 MB
Events in quadrant A5,089,260422,789
Events in quadrant B3,475,411444,675
Events in quadrant C3,371,178431,116
Events in quadrant D3,335,443423,485

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016410
B016410
C016412
D016416

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226822589
B0163371277
C0163121241
D0163351287

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70652823.991507%
B72472172.994342%
C72611522.093376%
D72461462.014905%

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 8473 7525 39 39 0.46% 0.52%
B 8473 7626 0 0 0.00% 0.00%
C 8473 7636 0 0 0.00% 0.00%
D 8473 7632 1 1 0.01% 0.01%

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 8 5 1369447 7715.27 860 839 177.4
A 15 236 205062 1151.27 860 839 177.4
A 4 2 67834 377.67 860 839 177.4
B 0 214 26099 146.12 885 862 172.7
B 12 111 19846 109.92 885 862 172.7
B 11 111 16164 88.6 885 862 172.7
C 9 68 14542 67.31 858 862 203.2
C 13 61 6548 27.98 858 862 203.2
C 12 4 5045 20.58 858 862 203.2
D 2 234 27028 122.13 859 837 214.4
D 1 52 24430 110.02 859 837 214.4
D 2 14 17512 77.76 859 837 214.4

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