ASTROSAT CZTI

Data Quality Report

Orbit 09775

Creation date: 2024-06-27T15:50:31.076687
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/AS1A03_080T01_9000001392_09775cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09775cztM0_level2_quad_clean.evt
Size (bytes)491,616,00093,827,520
Size468.8 MB 89.5 MB
Events in quadrant A3,125,359594,250
Events in quadrant B3,438,830598,379
Events in quadrant C3,101,285600,190
Events in quadrant D4,755,769569,205

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140918
B0146793
C0140855
D0187264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68771291.875818%
B68791512.195086%
C6878640.930503%
D68792263.285361%

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 7105 6881 0 0 0.00% 0.00%
B 7105 6881 9 9 0.13% 0.13%
C 7105 6881 0 0 0.00% 0.00%
D 7105 6881 93 93 1.31% 1.35%

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 15 239 7635 41.26 809 792 165.9
A 0 226 7565 40.84 809 792 165.9
A 12 194 6898 36.82 809 792 165.9
B 0 214 78337 496.7 812 793 156.1
B 4 239 73933 468.49 812 793 156.1
B 4 48 28591 178.06 812 793 156.1
C 8 128 9589 47.79 788 791 184.1
C 13 61 5984 28.21 788 791 184.1
C 8 112 5855 27.51 788 791 184.1
D 1 52 477297 2513.06 777 755 189.6
D 7 46 420898 2215.64 777 755 189.6
D 8 195 281653 1481.33 777 755 189.6

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