ASTROSAT CZTI

Data Quality Report

Orbit 18659

Creation date: 2024-06-27T17:53:04.040956
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_003T01_9000002786_18659cztM0_level2.evt modeM0/AS1A06_003T01_9000002786_18659cztM0_level2_quad_clean.evt
Size (bytes)590,898,240108,754,560
Size563.5 MB 103.7 MB
Events in quadrant A3,390,735720,456
Events in quadrant B3,444,712738,212
Events in quadrant C3,547,719718,390
Events in quadrant D7,065,760657,009

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143752
B0144172
C0147432
D0256652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65871362.064673%
B65881642.489375%
C65882173.293868%
D6588106816.211293%

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 9182 6589 0 0 0.00% 0.00%
B 9183 6590 7 7 0.08% 0.11%
C 9183 6590 6 6 0.07% 0.09%
D 9183 6589 859 859 9.35% 13.04%

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 15 192 39843 224.47 865 848 173.7
A 6 16 11742 62.71 865 848 173.7
A 13 254 7953 40.9 865 848 173.7
B 4 80 30666 184.41 866 845 161.7
B 12 111 19817 117.32 866 845 161.7
B 11 111 16943 99.55 866 845 161.7
C 14 238 130215 658.44 849 854 196.5
C 9 221 73824 371.41 849 854 196.5
C 3 233 28192 139.15 849 854 196.5
D 7 238 3065798 16188.67 795 774 189.3
D 1 52 496461 2618.09 795 774 189.3
D 13 168 464094 2447.14 795 774 189.3

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