ASTROSAT CZTI

Data Quality Report

Orbit 20230113_A12_025T17_9000005476_level2

Creation date: 2023-01-15T11:13:49.226395
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/AS1A12_025T17_9000005476cztM0_level2.fits modeM0/AS1A12_025T17_9000005476cztM0_level2_quad_clean.evt
Size (bytes)482,616,000497,499,840
Size460.3 MB 474.5 MB
Events in quadrant A2,683,6022,635,460
Events in quadrant B2,856,3043,111,061
Events in quadrant C2,882,3582,925,820
Events in quadrant D2,479,9942,685,004

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01996390
B01138370
C01303460
D01392060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011040
B011040
C011040
D011040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54065773314.303154%
B540653220.595579%
C5406510491.940257%
D5406526524.905207%

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 74528 53807 0 0 0.00% 0.00%
B 74528 54065 0 0 0.00% 0.00%
C 74528 54058 0 0 0.00% 0.00%
D 74528 54029 0 0 0.00% 0.00%

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 9 19 2177 8.6 701 656 176.9
A 7 110 2164 8.53 701 656 176.9
A 0 29 2152 8.46 701 656 176.9
B 2 9 2349 11.0 754 719 148.2
B 3 80 2257 10.38 754 719 148.2
B 5 128 2034 8.87 754 719 148.2
C 1 81 2444 8.81 762 712 196.6
C 1 80 2361 8.39 762 712 196.6
C 1 65 2014 6.62 762 712 196.6
D 10 189 1832 6.19 708 642 192.1
D 7 3 1832 6.19 708 642 192.1
D 4 160 1818 6.12 708 642 192.1

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