ASTROSAT CZTI

Data Quality Report

Orbit 28478

Creation date: 2024-06-27T19:52:11.695979
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_050T06_9000004092_28478cztM0_level2.evt modeM0/AS1A10_050T06_9000004092_28478cztM0_level2_quad_clean.evt
Size (bytes)681,042,240108,570,240
Size649.5 MB 103.5 MB
Events in quadrant A3,746,120715,624
Events in quadrant B6,817,068676,277
Events in quadrant C3,824,128685,411
Events in quadrant D5,708,276666,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162042
B0255262
C0162812
D0221762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78261792.287248%
B7827124615.919254%
C78272953.769005%
D78274445.672672%

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 8231 7826 0 0 0.00% 0.00%
B 8232 7827 767 767 9.32% 9.80%
C 8232 7827 0 0 0.00% 0.00%
D 8232 7827 322 322 3.91% 4.11%

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 15 174 24016 118.82 963 941 194.2
A 13 254 11325 53.47 963 941 194.2
A 3 137 10027 46.79 963 941 194.2
B 10 245 3047694 17408.18 902 878 175.0
B 10 246 221656 1261.43 902 878 175.0
B 12 111 22873 125.67 902 878 175.0
C 14 238 145428 658.77 927 927 219.3
C 7 247 33471 148.37 927 927 219.3
C 3 233 23161 101.36 927 927 219.3
D 8 195 1130388 5097.88 929 903 221.6
D 1 52 1010007 4554.54 929 903 221.6
D 2 234 29155 127.51 929 903 221.6

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