ASTROSAT CZTI

Data Quality Report

Orbit 18934

Creation date: 2024-06-27T17:56:44.607179
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_163T01_9000002820_18934cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18934cztM0_level2_quad_clean.evt
Size (bytes)554,808,96081,383,040
Size529.1 MB 77.6 MB
Events in quadrant A3,823,952521,736
Events in quadrant B4,528,958517,986
Events in quadrant C2,989,774515,622
Events in quadrant D5,054,837491,389

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150411
B0173542
C0124131
D0188221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59681482.479893%
B59683786.333780%
C5968931.558311%
D596863410.623324%

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 7138 5969 24 24 0.34% 0.40%
B 7138 5969 211 211 2.96% 3.53%
C 7138 5969 0 0 0.00% 0.00%
D 7138 5969 486 486 6.81% 8.14%

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 14 235 834090 5344.61 770 755 155.9
A 6 16 10932 65.27 770 755 155.9
A 15 174 10452 62.19 770 755 155.9
B 3 112 1267922 8893.49 750 733 142.5
B 7 220 144187 1006.8 750 733 142.5
B 0 189 81731 568.47 750 733 142.5
C 14 238 114416 667.56 731 736 170.3
C 3 233 17922 100.92 731 736 170.3
C 13 61 5175 26.07 731 736 170.3
D 7 238 1508452 8552.48 721 700 176.3
D 1 52 482616 2733.59 721 700 176.3
D 9 1 217253 1228.36 721 700 176.3

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