ASTROSAT CZTI

Data Quality Report

Orbit 36978

Creation date: 2024-06-27T21:33:49.857630
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/AS1A11_079T01_9000005254_36978cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36978cztM0_level2_quad_clean.evt
Size (bytes)1,090,255,680117,547,200
Size1.0 GB 112.1 MB
Events in quadrant A5,221,296727,748
Events in quadrant B12,269,191681,532
Events in quadrant C5,707,807728,397
Events in quadrant D9,083,674664,979

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224164
B0438133
C0234203
D0345123

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10918140.128229%
B10918198918.217622%
C10918590.540392%
D10918125911.531416%

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 15007 10921 1 1 0.01% 0.01%
B 15007 10921 1596 1596 10.64% 14.61%
C 15007 10921 46 46 0.31% 0.42%
D 15006 10920 1169 1169 7.79% 10.71%

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 10 83 386543 1547.82 1236 1209 249.0
A 9 143 38203 148.6 1236 1209 249.0
A 13 254 14096 51.76 1236 1209 249.0
B 5 184 6933869 30523.67 1185 1153 227.1
B 4 81 330661 1450.77 1185 1153 227.1
B 0 221 162296 709.49 1185 1153 227.1
C 15 214 463952 1647.78 1210 1218 280.8
C 0 10 318746 1130.71 1210 1218 280.8
C 14 254 119273 420.39 1210 1218 280.8
D 12 17 3042611 10883.71 1142 1111 279.5
D 13 171 725030 2590.47 1142 1111 279.5
D 2 250 414916 1480.76 1142 1111 279.5

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