ASTROSAT CZTI

Data Quality Report

Orbit 23116

Creation date: 2024-06-27T18:50:07.329166
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/AS1A08_008T01_9000003414_23116cztM0_level2.evt modeM0/AS1A08_008T01_9000003414_23116cztM0_level2_quad_clean.evt
Size (bytes)544,596,480128,730,240
Size519.4 MB 122.8 MB
Events in quadrant A5,378,992828,779
Events in quadrant B3,223,931941,829
Events in quadrant C3,106,458877,984
Events in quadrant D4,368,956822,825

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199582
B0134892
C0130792
D0171312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A611992415.100507%
B6119490.800784%
C6119590.964210%
D61193255.311325%

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 7519 6120 756 756 10.05% 12.35%
B 7519 6120 2 2 0.03% 0.03%
C 7519 6120 3 3 0.04% 0.05%
D 7519 6120 256 256 3.40% 4.18%

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 6 16 2596172 17930.68 722 709 144.7
A 13 254 10124 65.04 722 709 144.7
A 0 226 6311 38.7 722 709 144.7
B 0 190 47338 320.83 789 771 145.1
B 0 189 24809 165.61 789 771 145.1
B 0 245 23844 158.96 789 771 145.1
C 14 238 121424 705.08 745 751 171.1
C 0 207 26048 147.81 745 751 171.1
C 0 10 25826 146.51 745 751 171.1
D 12 233 1063984 6002.0 731 710 177.2
D 1 239 226433 1274.17 731 710 177.2
D 1 52 129572 727.4 731 710 177.2

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