ASTROSAT CZTI

Data Quality Report

Orbit 47617

Creation date: 2024-07-18T13:49:07.870140
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_071T01_9000006340_47617cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47617cztM0_level2_quad_clean.evt
Size (bytes)510,350,400107,009,280
Size486.7 MB 102.1 MB
Events in quadrant A8,193,788673,116
Events in quadrant B3,238,911742,875
Events in quadrant C3,064,669710,035
Events in quadrant D3,880,022652,091

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292583
B0140151
C0137421
D0159591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A662875711.421243%
B6629701.055966%
C6629490.739176%
D66291291.945995%

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 7623 6629 415 415 5.44% 6.26%
B 7624 6630 14 14 0.18% 0.21%
C 7624 6630 1 1 0.01% 0.02%
D 7624 6630 67 67 0.88% 1.01%

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 3576316 23416.21 732 717 152.7
A 13 248 1067810 6988.28 732 717 152.7
A 9 191 686244 4489.44 732 717 152.7
B 0 200 95288 627.36 751 727 150.7
B 5 172 91660 603.29 751 727 150.7
B 5 32 67588 443.59 751 727 150.7
C 3 233 105014 596.79 745 749 174.7
C 14 254 43483 244.6 745 749 174.7
C 0 207 11592 62.06 745 749 174.7
D 2 165 492116 2647.68 746 721 185.6
D 2 249 320349 1722.19 746 721 185.6
D 13 171 107234 573.9 746 721 185.6

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