ASTROSAT CZTI

Data Quality Report

Orbit 31292

Creation date: 2024-06-27T20:26:14.450094
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/AS1T04_024T01_9000004530_31292cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31292cztM0_level2_quad_clean.evt
Size (bytes)518,676,480100,080,000
Size494.6 MB 95.4 MB
Events in quadrant A3,154,451667,326
Events in quadrant B5,085,919663,149
Events in quadrant C3,573,752618,399
Events in quadrant D3,453,538628,836

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133802
B0201222
C0146882
D0145292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6496420.646552%
B64961722.647783%
C64962774.264163%
D6496951.462438%

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 7606 6497 0 0 0.00% 0.00%
B 7606 6497 39 39 0.51% 0.60%
C 7606 6497 35 35 0.46% 0.54%
D 7606 6497 46 46 0.60% 0.71%

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 13 254 12531 72.18 817 804 162.5
A 3 137 7879 43.55 817 804 162.5
A 0 226 6760 36.66 817 804 162.5
B 6 159 1711479 11206.02 801 780 152.7
B 4 80 223813 1460.99 801 780 152.7
B 12 111 18706 117.43 801 780 152.7
C 14 238 160554 909.59 761 766 175.7
C 0 10 160037 906.65 761 766 175.7
C 3 233 140900 797.71 761 766 175.7
D 8 195 324412 1704.4 773 754 189.9
D 12 233 120273 629.39 773 754 189.9
D 12 218 42240 218.47 773 754 189.9

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