ASTROSAT CZTI

Data Quality Report

Orbit 34595

Creation date: 2022-02-20T14:53:09.519445
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/AS1C07_014T01_9000004950_34595cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34595cztM0_level2_quad_clean.evt
Size (bytes)478,157,76077,978,880
Size456.0 MB 74.4 MB
Events in quadrant A2,757,586522,671
Events in quadrant B3,499,658518,248
Events in quadrant C2,983,430508,044
Events in quadrant D4,901,440461,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109303
B0136572
C0119322
D0182062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500990.179677%
B50092084.152525%
C5009390.778599%
D50092565.110801%

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 7041 5010 0 0 0.00% 0.00%
B 7041 5010 139 139 1.97% 2.77%
C 7041 5010 29 29 0.41% 0.58%
D 7041 5010 199 199 2.83% 3.97%

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 43499 309.49 692 683 138.3
A 9 143 26113 183.82 692 683 138.3
A 13 254 11623 79.08 692 683 138.3
B 5 172 531378 4122.48 675 661 128.7
B 0 219 88334 681.02 675 661 128.7
B 15 222 67270 517.4 675 661 128.7
C 15 214 216827 1427.0 654 664 151.5
C 0 10 101037 662.61 654 664 151.5
C 14 67 45752 297.65 654 664 151.5
D 8 195 1501054 9486.94 646 631 158.2
D 13 249 237299 1496.41 646 631 158.2
D 1 52 193719 1220.87 646 631 158.2

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