ASTROSAT CZTI

Data Quality Report

Orbit 21078

Creation date: 2024-06-27T18:23:13.602412
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/AS1A05_075T05_9000003116_21078cztM0_level2.evt modeM0/AS1A05_075T05_9000003116_21078cztM0_level2_quad_clean.evt
Size (bytes)598,760,64084,110,400
Size571.0 MB 80.2 MB
Events in quadrant A3,272,828546,882
Events in quadrant B3,522,817552,181
Events in quadrant C3,255,468527,150
Events in quadrant D7,613,290438,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142341
B0147521
C0141571
D0274102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69261141.645972%
B69271432.064386%
C69271251.804533%
D6926117516.965059%

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 7531 6927 3 3 0.04% 0.04%
B 7532 6928 13 13 0.17% 0.19%
C 7532 6928 0 0 0.00% 0.00%
D 7531 6927 807 807 10.72% 11.65%

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 96 29083 167.38 838 816 168.9
A 15 192 13961 77.84 838 816 168.9
A 13 254 9635 52.22 838 816 168.9
B 3 64 85100 531.01 836 816 158.7
B 0 219 56557 351.18 836 816 158.7
B 0 230 39758 245.34 836 816 158.7
C 14 238 126570 669.07 802 806 188.0
C 13 61 5589 25.45 802 806 188.0
C 9 54 2325 8.08 802 806 188.0
D 1 52 2234891 12234.27 746 723 182.6
D 1 239 2103857 11516.73 746 723 182.6
D 7 238 170500 929.7 746 723 182.6

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