ASTROSAT CZTI

Data Quality Report

Orbit 31657

Creation date: 2024-06-27T20:31:11.315835
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_056T01_9000004626_31657cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31657cztM0_level2_quad_clean.evt
Size (bytes)611,069,760121,780,800
Size582.8 MB 116.1 MB
Events in quadrant A3,370,226821,434
Events in quadrant B5,565,850841,371
Events in quadrant C4,847,856794,474
Events in quadrant D4,289,535784,325

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141042
B0208473
C0185942
D0170322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6410741.154446%
B64102163.369735%
C64106329.859594%
D64101101.716069%

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 9150 6412 0 0 0.00% 0.00%
B 9150 6412 39 39 0.43% 0.61%
C 9150 6412 241 241 2.63% 3.76%
D 9150 6412 27 27 0.30% 0.42%

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 13 254 12497 67.74 872 856 171.8
A 3 137 8020 41.69 872 856 171.8
A 0 226 7290 37.44 872 856 171.8
B 6 159 1794099 11022.0 877 855 162.7
B 10 245 135026 824.67 877 855 162.7
B 15 201 61767 374.39 877 855 162.7
C 0 10 608664 3182.91 825 832 191.0
C 10 22 561135 2934.03 825 832 191.0
C 3 233 282229 1473.54 825 832 191.0
D 8 195 864811 4330.91 858 840 199.5
D 13 249 120821 601.44 858 840 199.5
D 2 234 27915 135.72 858 840 199.5

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