ASTROSAT CZTI

Data Quality Report

Orbit 20230627_A12_099T01_9000005716_level2

Creation date: 2023-06-30T11:55:14.551256
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/AS1A12_099T01_9000005716cztM0_level2.fits modeM0/AS1A12_099T01_9000005716cztM0_level2_quad_clean.evt
Size (bytes)862,600,320866,321,280
Size822.6 MB 826.2 MB
Events in quadrant A5,305,7705,281,732
Events in quadrant B5,198,8305,495,234
Events in quadrant C5,245,8905,266,681
Events in quadrant D3,503,6063,339,899

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03950
D03950

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02752730
B02209460
C02266220
D04387360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020420
B020420
C020420
D020420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9998341034.103698%
B9998315001.500255%
C9998332313.231549%
D999832941529.420001%

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 144208 99934 0 0 0.00% 0.00%
B 144208 99980 0 0 0.00% 0.00%
C 144208 99780 0 0 0.00% 0.00%
D 144208 95570 0 0 0.00% 0.00%

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 7 110 4391 8.93 1383 1296 346.4
A 9 19 4265 8.57 1383 1296 346.4
A 0 29 4236 8.49 1383 1296 346.4
B 2 9 4445 11.57 1374 1309 271.0
B 3 80 3678 8.74 1374 1309 271.0
B 2 8 3571 8.35 1374 1309 271.0
C 1 81 4252 8.25 1383 1296 358.3
C 1 80 4158 7.99 1383 1296 358.3
C 3 202 4093 7.81 1383 1296 358.3
D 7 3 2594 6.24 1004 914 269.3
D 10 189 2559 6.11 1004 914 269.3
D 10 113 2506 5.91 1004 914 269.3

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