ASTROSAT CZTI

Data Quality Report

Orbit 46778

Creation date: 2024-06-27T23:27:31.357419
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_053T01_9000006266_46778cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46778cztM0_level2_quad_clean.evt
Size (bytes)421,326,72099,754,560
Size401.8 MB 95.1 MB
Events in quadrant A5,823,772664,550
Events in quadrant B3,607,185691,735
Events in quadrant C2,713,683659,411
Events in quadrant D3,003,115601,001

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211271
B0145171
C0122071
D0130801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57732344.053352%
B57741582.736405%
C5774420.727399%
D57741071.853135%

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 7003 5773 81 81 1.16% 1.40%
B 7004 5774 68 68 0.97% 1.18%
C 7004 5774 24 24 0.34% 0.42%
D 7003 5774 80 80 1.14% 1.39%

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 2964268 21962.81 655 642 134.9
A 9 191 184115 1359.68 655 642 134.9
A 13 248 119404 880.12 655 642 134.9
B 3 112 558256 4400.46 653 636 126.7
B 15 201 251127 1976.75 653 636 126.7
B 4 171 73757 577.04 653 636 126.7
C 14 254 155674 1047.62 639 643 148.0
C 1 241 37675 250.24 639 643 148.0
C 3 233 24396 160.51 639 643 148.0
D 13 249 125825 797.18 637 617 157.1
D 13 138 100211 634.1 637 617 157.1
D 10 181 67317 424.67 637 617 157.1

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