ASTROSAT CZTI

Data Quality Report

Orbit 22179

Creation date: 2024-06-27T18:38:06.138291
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/AS1A07_134T02_9000003282_22179cztM0_level2.evt modeM0/AS1A07_134T02_9000003282_22179cztM0_level2_quad_clean.evt
Size (bytes)543,507,84080,064,000
Size518.3 MB 76.4 MB
Events in quadrant A3,767,528484,357
Events in quadrant B3,885,446485,917
Events in quadrant C3,757,388462,793
Events in quadrant D4,532,429461,357

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159582
B0161572
C0158992
D0185272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76201572.060367%
B76191852.428140%
C76192272.979394%
D76193504.593779%

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 7925 7621 0 0 0.00% 0.00%
B 7924 7620 0 0 0.00% 0.00%
C 7924 7620 0 0 0.00% 0.00%
D 7924 7620 192 192 2.42% 2.52%

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 13 254 13925 65.59 976 955 197.7
A 3 137 8480 38.05 976 955 197.7
A 0 226 8297 37.13 976 955 197.7
B 0 190 52697 276.46 963 939 187.2
B 0 219 28253 145.9 963 939 187.2
B 12 111 22674 116.1 963 939 187.2
C 14 238 145419 658.34 926 931 219.5
C 13 61 6384 24.84 926 931 219.5
C 15 78 2284 6.16 926 931 219.5
D 1 52 714387 3077.01 943 916 231.9
D 13 172 117337 502.09 943 916 231.9
D 12 217 41512 175.08 943 916 231.9

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