ASTROSAT CZTI

Data Quality Report

Orbit 15602

Creation date: 2024-06-27T17:10:59.140652
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_037T01_9000002312_15602cztM0_level2.evt modeM0/AS1A04_037T01_9000002312_15602cztM0_level2_quad_clean.evt
Size (bytes)460,336,32096,531,840
Size439.0 MB 92.1 MB
Events in quadrant A3,535,744623,133
Events in quadrant B3,381,872642,892
Events in quadrant C3,301,717618,912
Events in quadrant D3,298,351603,126

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141733
B0138542
C0135372
D0136982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62331442.310284%
B6233681.090967%
C6233761.219317%
D6233941.508102%

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 7514 6234 87 87 1.16% 1.40%
B 7514 6234 4 4 0.05% 0.06%
C 7514 6234 1 1 0.01% 0.02%
D 7514 6234 39 39 0.52% 0.63%

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 4 2 337376 2071.63 819 802 162.5
A 9 143 26755 159.74 819 802 162.5
A 0 253 23022 136.77 819 802 162.5
B 4 251 114983 747.5 817 798 152.8
B 4 48 24224 153.36 817 798 152.8
B 0 189 20176 126.86 817 798 152.8
C 14 238 122829 655.22 800 808 186.2
C 3 233 46254 244.03 800 808 186.2
C 10 187 6607 31.14 800 808 186.2
D 10 70 166823 843.66 811 791 196.8
D 12 222 32771 162.5 811 791 196.8
D 2 234 28366 140.12 811 791 196.8

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