ASTROSAT CZTI

Data Quality Report

Orbit 28662

Creation date: 2024-06-27T19:54:37.553827
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/AS1A10_073T08_9000004112_28662cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28662cztM0_level2_quad_clean.evt
Size (bytes)520,724,160101,612,160
Size496.6 MB 96.9 MB
Events in quadrant A3,436,305688,641
Events in quadrant B3,831,738686,316
Events in quadrant C3,385,905641,000
Events in quadrant D4,689,130621,990

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139091
B0153211
C0137251
D0180201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62961983.144854%
B62962674.240788%
C62962794.431385%
D62963956.273825%

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 7346 6297 2 2 0.03% 0.03%
B 7346 6297 28 28 0.38% 0.44%
C 7346 6297 0 0 0.00% 0.00%
D 7346 6297 253 253 3.44% 4.02%

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 15 174 85217 483.45 868 853 174.5
A 13 254 11914 63.39 868 853 174.5
A 3 137 7897 40.37 868 853 174.5
B 10 245 462691 2847.1 850 832 162.2
B 12 111 19346 114.13 850 832 162.2
B 11 111 17587 103.29 850 832 162.2
C 14 238 160986 858.17 806 815 186.6
C 14 254 44360 233.31 806 815 186.6
C 2 16 22807 117.83 806 815 186.6
D 1 52 1176397 6076.77 817 797 193.5
D 8 195 198847 1023.73 817 797 193.5
D 2 250 114869 589.64 817 797 193.5

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