ASTROSAT CZTI

Data Quality Report

Orbit 43906

Creation date: 2024-06-27T22:57:01.784045
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/AS1A13_009T02_9000005914_43906cztM0_level2.fits modeM0/AS1A13_009T02_9000005914_43906cztM0_level2_quad_clean.evt
Size (bytes)522,092,160108,213,120
Size497.9 MB 103.2 MB
Events in quadrant A6,160,688725,446
Events in quadrant B3,317,235773,798
Events in quadrant C3,058,072733,901
Events in quadrant D6,264,167571,274

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232482
B0145082
C0140782
D0233842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67733905.758157%
B6773640.944928%
C6773270.398642%
D6772105515.578854%

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 7813 6774 289 289 3.70% 4.27%
B 7813 6774 14 14 0.18% 0.21%
C 7813 6774 9 9 0.12% 0.13%
D 7812 6773 951 951 12.17% 14.04%

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 15 223 1804511 11802.11 741 727 152.8
A 10 83 1133171 7409.55 741 727 152.8
A 2 79 133945 871.64 741 727 152.8
B 5 172 113091 754.53 758 735 148.9
B 4 171 53466 354.12 758 735 148.9
B 5 235 48302 319.44 758 735 148.9
C 3 233 63166 359.93 741 746 173.4
C 14 254 55307 314.62 741 746 173.4
C 14 96 12803 69.52 741 746 173.4
D 12 233 1665906 9649.5 681 659 172.6
D 1 52 666122 3856.12 681 659 172.6
D 5 235 289085 1671.32 681 659 172.6

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