ASTROSAT CZTI

Data Quality Report

Orbit 02493

Creation date: 2024-06-27T14:18:39.071641
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/AS1T01_046T01_9000000372_02493cztM0_level2.fits modeM0/AS1T01_046T01_9000000372_02493cztM0_level2_quad_clean.evt
Size (bytes)386,438,400120,386,880
Size368.5 MB 114.8 MB
Events in quadrant A3,367,852795,850
Events in quadrant B3,429,361822,524
Events in quadrant C3,438,772776,253
Events in quadrant D3,477,098721,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156244
B0156703
C0157883
D0160753

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75911532.015545%
B75911421.870636%
C75911301.712554%
D75911131.488605%

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 7966 7593 0 0 0.00% 0.00%
B 7966 7593 0 0 0.00% 0.00%
C 7966 7593 13 13 0.16% 0.17%
D 7966 7593 11 11 0.14% 0.14%

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 12 194 9726 49.25 872 851 180.2
A 0 226 9503 48.01 872 851 180.2
A 8 15 8528 42.6 872 851 180.2
B 15 85 15970 88.2 882 859 171.3
B 12 111 12911 70.35 882 859 171.3
B 11 111 10777 57.89 882 859 171.3
C 9 144 70515 355.05 840 837 196.2
C 8 112 30959 153.49 840 837 196.2
C 10 65 23899 117.52 840 837 196.2
D 13 238 92784 463.06 838 814 198.6
D 2 184 50112 248.21 838 814 198.6
D 2 14 47301 234.06 838 814 198.6

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