ASTROSAT CZTI

Data Quality Report

Orbit 49752

Creation date: 2024-12-09T12:29:47.929574
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/AS1A13_037T01_9000006440_49752cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49752cztM0_level2_quad_clean.evt
Size (bytes)1,127,511,36052,044,480
Size1.1 GB 49.6 MB
Events in quadrant A14,791,63289,257
Events in quadrant B4,036,839675,850
Events in quadrant C10,065,63454,961
Events in quadrant D12,362,673322,552

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481395
B0160401
C0342061
D0410011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210558389.903382%
B62102403.864734%
C6210578193.091787%
D6210304449.017713%

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 7350 6210 5578 5578 75.89% 89.82%
B 7350 6210 101 101 1.37% 1.63%
C 7349 6209 1265 1265 17.21% 20.37%
D 7350 6210 3133 3133 42.63% 50.45%

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 10 83 6777707 50574.97 483 469 134.0
A 7 64 1102805 8226.16 483 469 134.0
A 15 191 912912 6809.08 483 469 134.0
B 1 207 306423 2069.19 697 674 147.8
B 4 21 246846 1666.0 697 674 147.8
B 4 206 246379 1662.83 697 674 147.8
C 15 180 5000622 107021.44 131 129 46.7
C 15 163 806486 17257.8 131 129 46.7
C 15 190 735039 15728.67 131 129 46.7
D 15 168 3273842 20688.33 536 517 158.2
D 12 6 942080 5950.94 536 517 158.2
D 15 169 731232 4618.32 536 517 158.2

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