ASTROSAT CZTI

Data Quality Report

Orbit 12434

Creation date: 2024-06-27T16:27:17.464982
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/AS1A04_141T01_9000001848_12434cztM0_level2.evt modeM0/AS1A04_141T01_9000001848_12434cztM0_level2_quad_clean.evt
Size (bytes)489,277,44076,368,960
Size466.6 MB 72.8 MB
Events in quadrant A3,690,610466,245
Events in quadrant B3,944,911472,940
Events in quadrant C3,189,155478,056
Events in quadrant D3,559,169449,097

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149273
B0156462
C0133472
D0146672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6385620.971026%
B63852043.194988%
C6385450.704777%
D6385911.425215%

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 9011 6387 5 5 0.06% 0.08%
B 9011 6386 71 71 0.79% 1.11%
C 9011 6387 4 4 0.04% 0.06%
D 9011 6388 61 61 0.68% 0.95%

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 13 251 193818 1195.8 808 793 161.4
A 1 162 132446 815.6 808 793 161.4
A 1 178 68019 416.47 808 793 161.4
B 4 239 451229 2979.79 812 795 151.2
B 3 64 220622 1454.24 812 795 151.2
B 0 187 40872 265.12 812 795 151.2
C 15 208 46223 248.31 806 810 182.9
C 13 61 5932 28.01 806 810 182.9
C 3 202 2097 7.04 806 810 182.9
D 1 52 460618 2440.16 790 767 188.5
D 7 80 52376 273.86 790 767 188.5
D 8 195 29931 154.76 790 767 188.5

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