ASTROSAT CZTI

Data Quality Report

Orbit 18857

Creation date: 2024-06-27T17:55:42.919523
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/AS1T03_094T01_9000002816_18857cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18857cztM0_level2_quad_clean.evt
Size (bytes)468,668,160102,047,040
Size447.0 MB 97.3 MB
Events in quadrant A3,141,578668,305
Events in quadrant B3,376,068688,350
Events in quadrant C3,159,692651,282
Events in quadrant D4,071,254625,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135591
B0143851
C0136271
D0164531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6556100.152532%
B6557460.701540%
C6557360.549032%
D6557791.204819%

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 7706 6557 3 3 0.04% 0.05%
B 7707 6558 14 14 0.18% 0.21%
C 7707 6558 0 0 0.00% 0.00%
D 7707 6558 52 52 0.67% 0.79%

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 14 4 16576 96.56 805 789 163.5
A 11 29 13910 80.26 805 789 163.5
A 9 143 11506 65.55 805 789 163.5
B 7 220 149449 956.98 810 791 155.3
B 4 216 28410 177.8 810 791 155.3
B 0 230 18072 111.25 810 791 155.3
C 14 238 120712 665.87 771 776 180.1
C 3 233 21261 113.73 771 776 180.1
C 0 207 10707 55.14 771 776 180.1
D 7 238 601526 3227.45 769 747 186.1
D 1 52 293793 1574.28 769 747 186.1
D 9 1 146941 785.37 769 747 186.1

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