ASTROSAT CZTI

Data Quality Report

Orbit 13677

Creation date: 2024-06-27T16:44:24.079386
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/AS1G08_070T01_9000002028_13677cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13677cztM0_level2_quad_clean.evt
Size (bytes)473,483,52098,429,760
Size451.5 MB 93.9 MB
Events in quadrant A3,168,548647,056
Events in quadrant B3,559,394686,860
Events in quadrant C3,461,549628,161
Events in quadrant D3,730,101586,900

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129312
B0141491
C0138371
D0149801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6188420.678733%
B6188861.389787%
C6188230.371687%
D6188731.179703%

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 7514 6190 0 0 0.00% 0.00%
B 7514 6190 15 15 0.20% 0.24%
C 7514 6190 0 0 0.00% 0.00%
D 7514 6190 21 21 0.28% 0.34%

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 7972 43.99 820 806 162.9
A 0 226 7245 39.53 820 806 162.9
A 9 143 6198 33.1 820 806 162.9
B 0 219 139921 896.82 826 811 155.1
B 3 64 90120 575.76 826 811 155.1
B 4 48 43155 272.99 826 811 155.1
C 3 233 339952 1844.83 800 807 183.8
C 13 61 5558 25.84 800 807 183.8
C 14 234 3040 12.15 800 807 183.8
D 8 195 463222 2444.13 792 774 189.2
D 5 222 87211 456.84 792 774 189.2
D 10 157 45309 235.38 792 774 189.2

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