ASTROSAT CZTI

Data Quality Report

Orbit 20265

Creation date: 2024-06-27T18:13:13.521845
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_175T01_9000003004_20265cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20265cztM0_level2_quad_clean.evt
Size (bytes)487,575,36068,307,840
Size465.0 MB 65.1 MB
Events in quadrant A3,648,130417,027
Events in quadrant B3,430,713421,291
Events in quadrant C3,315,021398,974
Events in quadrant D3,946,087392,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144252
B0137962
C0134042
D0154352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62791532.436694%
B62791171.863354%
C62791031.640389%
D62791913.041886%

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 7574 6280 44 44 0.58% 0.70%
B 7574 6280 6 6 0.08% 0.10%
C 7574 6280 0 0 0.00% 0.00%
D 7574 6280 134 134 1.77% 2.13%

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 14 238 152130 888.54 851 837 170.3
A 4 2 126478 737.89 851 837 170.3
A 8 205 40045 230.27 851 837 170.3
B 7 220 40672 251.59 849 831 158.4
B 3 64 21541 130.78 849 831 158.4
B 12 111 18774 113.31 849 831 158.4
C 14 238 130689 701.48 805 814 185.1
C 0 207 28545 149.78 805 814 185.1
C 1 16 9111 44.81 805 814 185.1
D 11 176 322843 1660.52 814 792 193.9
D 7 238 239368 1230.12 814 792 193.9
D 1 52 197258 1012.99 814 792 193.9

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