ASTROSAT CZTI

Data Quality Report

Orbit 27421

Creation date: 2024-06-27T19:39:54.885909
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/AS1T03_249T01_9000003934_27421cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27421cztM0_level2_quad_clean.evt
Size (bytes)599,731,20079,542,720
Size571.9 MB 75.9 MB
Events in quadrant A3,765,728486,314
Events in quadrant B3,850,338482,629
Events in quadrant C4,076,853457,806
Events in quadrant D5,951,325449,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160050
B0162150
C0168000
D0229990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76551732.259961%
B76502062.692810%
C76442853.728414%
D76355326.967911%

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 8373 7681 2 2 0.02% 0.03%
B 8373 7682 0 0 0.00% 0.00%
C 8372 7681 32 32 0.38% 0.42%
D 8372 7677 346 346 4.13% 4.51%

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 12724 59.51 971 948 197.9
A 3 137 9366 42.54 971 948 197.9
A 0 226 8311 37.21 971 948 197.9
B 0 190 54134 283.77 956 929 187.5
B 12 111 22989 117.66 956 929 187.5
B 11 111 20656 105.22 956 929 187.5
C 2 16 321459 1467.52 919 924 218.4
C 14 238 145307 661.03 919 924 218.4
C 8 128 12373 52.42 919 924 218.4
D 1 52 2060147 9217.63 923 895 223.4
D 2 250 204432 911.07 923 895 223.4
D 12 227 92684 410.87 923 895 223.4

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