ASTROSAT CZTI

Data Quality Report

Orbit 18709

Creation date: 2024-06-27T17:53:46.338761
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_165T07_9000002796_18709cztM0_level2.evt modeM0/AS1A05_165T07_9000002796_18709cztM0_level2_quad_clean.evt
Size (bytes)1,772,242,560316,632,960
Size1.7 GB 302.0 MB
Events in quadrant A11,722,9231,996,080
Events in quadrant B12,164,5702,035,922
Events in quadrant C15,554,3411,942,427
Events in quadrant D12,556,6461,910,162

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510765
B0520585
C0633295
D0548136

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05060
B05060
C05060
D05060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A247951310.528332%
B247962661.072754%
C247964411.778513%
D247953841.548699%

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 27285 24800 24 24 0.09% 0.10%
B 27286 24801 36 36 0.13% 0.15%
C 27286 24801 4 4 0.01% 0.02%
D 27285 24800 263 263 0.96% 1.06%

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 9 143 143496 235.13 2969 2903 597.9
A 14 111 74405 119.58 2969 2903 597.9
A 15 192 41888 65.2 2969 2903 597.9
B 10 245 363414 638.02 2966 2888 565.1
B 12 111 70099 118.94 2966 2888 565.1
B 11 111 61185 103.17 2966 2888 565.1
C 3 233 3914567 5857.08 2862 2882 667.9
C 14 238 435648 647.99 2862 2882 667.9
C 0 207 38354 53.11 2862 2882 667.9
D 7 238 789249 1125.49 2882 2797 698.8
D 1 52 712432 1015.56 2882 2797 698.8
D 2 234 106294 148.11 2882 2797 698.8

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