ASTROSAT CZTI

Data Quality Report

Orbit 37651

Creation date: 2024-06-27T21:42:39.086149
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/AS1A11_075T01_9000005342_37651cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37651cztM0_level2_quad_clean.evt
Size (bytes)449,896,320100,920,960
Size429.1 MB 96.2 MB
Events in quadrant A4,216,280659,220
Events in quadrant B3,090,792697,249
Events in quadrant C2,797,911701,237
Events in quadrant D3,184,850652,002

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158563
B0122652
C0112472
D0128072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49393817.714112%
B49391242.510630%
C4939551.113586%
D4939801.619761%

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 7032 4940 296 296 4.21% 5.99%
B 7031 4938 60 60 0.85% 1.22%
C 7031 4938 40 40 0.57% 0.81%
D 7031 4938 87 87 1.24% 1.76%

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 15 222 1338398 11093.36 603 593 120.6
A 10 83 293343 2427.54 603 593 120.6
A 9 143 196246 1622.4 603 593 120.6
B 4 232 153335 1330.57 619 605 114.8
B 5 172 131377 1139.27 619 605 114.8
B 4 141 73300 633.31 619 605 114.8
C 15 214 227979 1608.72 618 625 141.3
C 0 10 133687 941.52 618 625 141.3
C 14 254 25008 172.53 618 625 141.3
D 2 249 386300 2653.56 610 596 145.4
D 2 250 175886 1205.96 610 596 145.4
D 2 153 86615 591.79 610 596 145.4

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