ASTROSAT CZTI

Data Quality Report

Orbit 19910

Creation date: 2024-06-27T18:08:39.197355
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/AS1A05_064T01_9000002964_19910cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19910cztM0_level2_quad_clean.evt
Size (bytes)234,383,04027,161,280
Size223.5 MB 25.9 MB
Events in quadrant A1,012,225185,431
Events in quadrant B1,114,577191,078
Events in quadrant C1,177,621183,273
Events in quadrant D3,628,67589,024

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047930
B049920
C052310
D0123800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239610.041736%
B239740.166875%
C2397220.917814%
D2397123751.606174%

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 2396 2396 0 0 0.00% 0.00%
B 2397 2397 2 2 0.08% 0.08%
C 2397 2397 17 17 0.71% 0.71%
D 2396 2396 1051 1051 43.86% 43.86%

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 0 226 2227 35.41 263 257 55.6
A 3 137 2203 34.97 263 257 55.6
A 12 194 1929 30.05 263 257 55.6
B 7 220 61687 1179.12 262 256 52.1
B 12 111 6165 113.42 262 256 52.1
B 11 111 5503 100.71 262 256 52.1
C 9 221 171482 2891.66 247 248 59.2
C 14 238 39387 660.95 247 248 59.2
C 13 61 1831 26.73 247 248 59.2
D 2 184 2615379 58798.95 174 168 44.5
D 7 96 284217 6386.4 174 168 44.5
D 12 1 28311 632.75 174 168 44.5

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