ASTROSAT CZTI

Data Quality Report

Orbit 46871

Creation date: 2024-06-27T23:28:46.244874
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_053T01_9000006274_46871cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46871cztM0_level2_quad_clean.evt
Size (bytes)544,216,320121,262,400
Size519.0 MB 115.6 MB
Events in quadrant A6,819,704817,107
Events in quadrant B3,982,628831,765
Events in quadrant C3,407,566790,269
Events in quadrant D5,338,634697,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249190
B0170731
C0159790
D0215010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7696610.792620%
B7695500.649773%
C7696200.259875%
D76964626.003119%

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 7696 7696 16 16 0.21% 0.21%
B 7696 7696 18 18 0.23% 0.23%
C 7696 7696 16 16 0.21% 0.21%
D 7696 7696 409 409 5.31% 5.31%

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 3504201 20154.83 832 812 173.8
A 9 191 49987 282.9 832 812 173.8
A 13 248 32395 181.7 832 812 173.8
B 3 112 555329 3388.76 827 801 163.6
B 0 200 51871 312.09 827 801 163.6
B 8 234 27565 163.56 827 801 163.6
C 1 241 141250 726.9 816 820 193.2
C 14 254 72072 368.82 816 820 193.2
C 1 3 8346 38.96 816 820 193.2
D 1 52 1403423 7097.55 793 768 197.6
D 13 249 504593 2549.4 793 768 197.6
D 11 192 120854 607.65 793 768 197.6

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