ASTROSAT CZTI

Data Quality Report

Orbit 39780

Creation date: 2024-06-27T22:08:55.520212
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/AS1T05_086T01_9000005496_39780cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39780cztM0_level2_quad_clean.evt
Size (bytes)389,234,880106,375,680
Size371.2 MB 101.4 MB
Events in quadrant A3,104,564776,186
Events in quadrant B2,699,060778,048
Events in quadrant C4,924,058671,443
Events in quadrant D3,296,734649,760

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123833
B0108632
C0180052
D0127912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4937250.506380%
B4937210.425360%
C493749410.006077%
D49381663.361685%

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 7060 4938 18 18 0.25% 0.36%
B 7060 4938 5 5 0.07% 0.10%
C 7060 4938 461 461 6.53% 9.34%
D 7061 4939 145 145 2.05% 2.94%

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 455758 3375.26 643 633 134.8
A 13 248 66649 489.58 643 633 134.8
A 9 143 51639 378.27 643 633 134.8
B 5 172 110752 882.2 631 619 124.8
B 0 190 32232 253.23 631 619 124.8
B 5 255 22908 178.54 631 619 124.8
C 9 187 2015350 14118.07 593 600 142.7
C 15 208 268852 1879.74 593 600 142.7
C 15 214 204118 1426.12 593 600 142.7
D 12 233 518977 3337.01 613 599 155.3
D 13 249 202358 1298.8 613 599 155.3
D 12 227 129626 830.6 613 599 155.3

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