ASTROSAT CZTI

Data Quality Report

Orbit 37088

Creation date: 2024-06-27T21:35:25.394934
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/AS1A09_138T04_9000005282_37088cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37088cztM0_level2_quad_clean.evt
Size (bytes)422,320,32053,343,360
Size402.8 MB 50.9 MB
Events in quadrant A2,868,988327,484
Events in quadrant B2,690,922327,462
Events in quadrant C3,614,104310,946
Events in quadrant D3,280,333302,302

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114723
B0108692
C0136442
D0129582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4945480.970677%
B4945440.889788%
C49452575.197169%
D49451392.810920%

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 7038 4946 25 25 0.36% 0.51%
B 7038 4946 32 32 0.45% 0.65%
C 7038 4946 248 248 3.52% 5.01%
D 7038 4946 118 118 1.68% 2.39%

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 260558 2114.63 614 604 122.9
A 15 237 145029 1174.84 614 604 122.9
A 7 3 59480 478.93 614 604 122.9
B 5 172 165459 1432.79 608 595 115.1
B 5 184 43048 368.95 608 595 115.1
B 5 255 22670 191.85 608 595 115.1
C 1 23 553303 4117.23 576 579 134.2
C 0 10 331959 2468.44 576 579 134.2
C 15 208 256583 1906.97 576 579 134.2
D 1 47 222001 1555.6 588 573 142.3
D 2 153 215852 1512.4 588 573 142.3
D 13 171 127356 890.69 588 573 142.3

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