ASTROSAT CZTI

Data Quality Report

Orbit 32115

Creation date: 2024-06-27T20:36:37.975838
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/AS1T04_051T01_9000004686_32115cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32115cztM0_level2_quad_clean.evt
Size (bytes)1,965,136,320305,542,080
Size1.8 GB 291.4 MB
Events in quadrant A10,730,5151,978,033
Events in quadrant B20,561,7861,923,031
Events in quadrant C11,305,8881,922,065
Events in quadrant D15,378,9881,858,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04685296
B077253159
C048178104
D061309158

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04640
B04651
C04651
D04651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228501120.490153%
B228488553.742122%
C228443921.715987%
D228413771.650541%

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 25673 22857 1 1 0.00% 0.00%
B 25673 22859 257 257 1.00% 1.12%
C 25673 22857 52 52 0.20% 0.23%
D 25672 22852 347 347 1.35% 1.52%

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 13 254 45727 77.82 2764 2703 552.8
A 13 6 41665 70.48 2764 2703 552.8
A 3 137 27807 45.41 2764 2703 552.8
B 6 159 6558589 12847.8 2708 2638 510.3
B 10 245 2556757 5005.35 2708 2638 510.3
B 0 190 261437 507.17 2708 2638 510.3
C 14 238 457121 738.86 2630 2647 615.1
C 0 10 407777 658.64 2630 2647 615.1
C 14 254 56927 88.25 2630 2647 615.1
D 8 195 4075444 6483.56 2641 2573 628.2
D 7 38 546034 865.13 2641 2573 628.2
D 12 233 311035 491.04 2641 2573 628.2

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