ASTROSAT CZTI

Data Quality Report

Orbit 13462

Creation date: 2024-06-27T16:41:10.174039
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/AS1A04_103T01_9000001988_13462cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13462cztM0_level2_quad_clean.evt
Size (bytes)442,514,88093,084,480
Size422.0 MB 88.8 MB
Events in quadrant A3,231,584598,280
Events in quadrant B3,334,203610,997
Events in quadrant C3,201,532589,434
Events in quadrant D3,190,349564,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137713
B0140072
C0136442
D0138932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6531821.255550%
B6531961.469913%
C6531440.673710%
D6531410.627775%

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 7757 6532 0 0 0.00% 0.00%
B 7757 6532 2 2 0.03% 0.03%
C 7757 6532 0 0 0.00% 0.00%
D 7757 6532 2 2 0.03% 0.03%

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 1 162 9478 51.84 835 819 167.0
A 8 15 7812 41.87 835 819 167.0
A 0 226 7661 40.96 835 819 167.0
B 4 142 41243 254.75 837 815 158.7
B 3 209 18183 109.44 837 815 158.7
B 12 111 17909 107.71 837 815 158.7
C 3 233 37193 198.05 802 806 183.7
C 14 220 34822 185.15 802 806 183.7
C 13 61 5810 27.24 802 806 183.7
D 8 195 111733 586.08 796 775 189.3
D 13 104 25746 131.9 796 775 189.3
D 2 234 21023 106.95 796 775 189.3

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