ASTROSAT CZTI

Data Quality Report

Orbit 15858

Creation date: 2024-06-27T17:14:25.358456
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_143T01_9000002344_15858cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15858cztM0_level2_quad_clean.evt
Size (bytes)2,484,100,800391,985,280
Size2.3 GB 373.8 MB
Events in quadrant A20,760,7072,390,699
Events in quadrant B17,347,0482,465,612
Events in quadrant C16,382,4542,362,504
Events in quadrant D18,409,2712,280,380

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07000
B07000
C07000
D07000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0845558
B0737237
C0707727
D0789067

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3451319535.658737%
B345137902.288993%
C345136561.900733%
D3451313473.902877%

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 37960 34521 850 850 2.24% 2.46%
B 37960 34522 97 97 0.26% 0.28%
C 37960 34521 0 0 0.00% 0.00%
D 37960 34520 765 765 2.02% 2.22%

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 4987776 6071.94 4074 3983 820.8
A 9 143 44574 49.45 4074 3983 820.8
A 0 226 36070 39.09 4074 3983 820.8
B 4 173 530703 662.7 4149 4039 794.7
B 4 216 142639 174.4 4149 4039 794.7
B 4 48 118583 144.13 4149 4039 794.7
C 14 238 607285 643.74 3994 4018 937.1
C 3 233 139489 144.56 3994 4018 937.1
C 0 207 31678 29.52 3994 4018 937.1
D 1 52 3000466 3076.3 4010 3891 974.1
D 2 234 138312 138.0 4010 3891 974.1
D 7 223 70462 68.34 4010 3891 974.1

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