ASTROSAT CZTI

Data Quality Report

Orbit 04615

Creation date: 2024-06-27T14:44:34.358053
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/AS1G05_154T01_9000000576_04615cztM0_level2.evt modeM0/AS1G05_154T01_9000000576_04615cztM0_level2_quad_clean.evt
Size (bytes)558,901,44073,405,440
Size533.0 MB 70.0 MB
Events in quadrant A3,362,143460,084
Events in quadrant B5,011,473445,946
Events in quadrant C3,166,419463,109
Events in quadrant D4,964,393418,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142333
B0191272
C0135812
D0190792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62261642.634115%
B622662510.038548%
C6226150.240925%
D62265148.255702%

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 7476 6227 71 71 0.95% 1.14%
B 7476 6227 497 497 6.65% 7.98%
C 7476 6227 3 3 0.04% 0.05%
D 7476 6227 447 447 5.98% 7.18%

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 0 118 391207 2602.63 732 716 150.0
A 8 15 86715 573.19 732 716 150.0
A 0 226 42756 280.2 732 716 150.0
B 14 167 1237315 8882.5 727 713 139.2
B 10 16 615581 4416.59 727 713 139.2
B 8 3 145126 1037.32 727 713 139.2
C 14 48 267915 1583.53 719 723 168.7
C 9 54 42126 245.38 719 723 168.7
C 9 247 27538 158.92 719 723 168.7
D 13 235 1238148 7511.12 685 666 164.8
D 8 112 571477 3464.64 685 666 164.8
D 12 233 255624 1547.51 685 666 164.8

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