ASTROSAT CZTI

Data Quality Report

Orbit 20731

Creation date: 2024-06-27T18:18:55.605266
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/AS1A06_002T02_9000003064_20731cztM0_level2.evt modeM0/AS1A06_002T02_9000003064_20731cztM0_level2_quad_clean.evt
Size (bytes)445,841,280100,465,920
Size425.2 MB 95.8 MB
Events in quadrant A3,004,782674,557
Events in quadrant B3,131,943677,765
Events in quadrant C3,155,244626,458
Events in quadrant D3,778,881621,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144351328
B0149351511
C0145391389
D0169981680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014311
B014511
C01459
D014311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6345290.457053%
B6348651.023945%
C6335981.546961%
D63171241.962957%

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 7577 6457 0 0 0.00% 0.00%
B 7577 6452 6 6 0.08% 0.09%
C 7577 6454 0 0 0.00% 0.00%
D 7577 6415 68 68 0.90% 1.06%

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 10 253 8378 48.08 779 765 158.4
A 0 226 6671 37.3 779 765 158.4
A 3 137 6458 35.95 779 765 158.4
B 3 64 69469 463.45 775 755 148.3
B 12 111 17963 116.06 775 755 148.3
B 11 111 15635 100.36 775 755 148.3
C 7 247 136167 776.54 741 744 174.4
C 14 238 115040 655.4 741 744 174.4
C 3 233 13912 75.51 741 744 174.4
D 1 20 367797 2034.54 750 728 180.4
D 7 38 178209 983.72 750 728 180.4
D 2 165 143332 790.4 750 728 180.4

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