ASTROSAT CZTI

Data Quality Report

Orbit 31369

Creation date: 2024-06-27T20:27:21.930475
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_101T01_9000004546_31369cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31369cztM0_level2_quad_clean.evt
Size (bytes)558,587,52082,598,400
Size532.7 MB 78.8 MB
Events in quadrant A3,426,951529,994
Events in quadrant B5,308,481521,102
Events in quadrant C3,905,365493,805
Events in quadrant D3,831,590498,442

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137301
B0201071
C0154751
D0152581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65611201.828989%
B65621952.971655%
C65612083.170248%
D6561971.478433%

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 7736 6561 0 0 0.00% 0.00%
B 7737 6562 8 8 0.10% 0.12%
C 7736 6562 32 32 0.41% 0.49%
D 7736 6562 11 11 0.14% 0.17%

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 11028 57.61 888 873 176.3
A 3 137 8310 42.19 888 873 176.3
A 0 226 7539 37.81 888 873 176.3
B 6 159 1768667 10764.38 861 839 164.2
B 4 80 55316 331.71 861 839 164.2
B 0 229 50101 299.96 861 839 164.2
C 3 233 404460 2127.23 823 829 189.7
C 14 238 141996 743.98 823 829 189.7
C 0 10 120517 630.78 823 829 189.7
D 8 195 423358 2109.13 853 831 200.3
D 10 203 95923 474.67 853 831 200.3
D 2 250 68743 339.0 853 831 200.3

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