ASTROSAT CZTI

Data Quality Report

Orbit 11764

Creation date: 2024-06-27T16:17:58.863342
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/AS1A04_231T01_9000001740_11764cztM0_level2.evt modeM0/AS1A04_231T01_9000001740_11764cztM0_level2_quad_clean.evt
Size (bytes)586,995,840105,975,360
Size559.8 MB 101.1 MB
Events in quadrant A4,077,095697,778
Events in quadrant B5,274,772690,251
Events in quadrant C2,977,784713,068
Events in quadrant D5,001,469649,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166993
B0203282
C0134202
D0192072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65802804.255319%
B658067610.273556%
C6580420.638298%
D65804847.355623%

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 8636 6583 59 59 0.68% 0.90%
B 8636 6582 378 378 4.38% 5.74%
C 8636 6583 1 1 0.01% 0.02%
D 8636 6583 361 361 4.18% 5.48%

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 5 16 286478 1818.97 768 750 157.1
A 8 15 252482 1602.55 768 750 157.1
A 1 162 170970 1083.64 768 750 157.1
B 4 239 1070425 7465.86 758 738 143.3
B 3 64 703207 4902.87 758 738 143.3
B 15 204 298412 2077.61 758 738 143.3
C 13 61 5712 28.27 761 764 175.0
C 0 207 5239 25.57 761 764 175.0
C 12 4 3542 15.87 761 764 175.0
D 1 52 1569551 8870.79 732 710 176.9
D 5 222 172441 971.03 732 710 176.9
D 7 80 129060 725.74 732 710 176.9

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