ASTROSAT CZTI

Data Quality Report

Orbit 24171

Creation date: 2024-06-27T19:03:03.331263
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/AS1A07_067T01_9000003578_24171cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24171cztM0_level2_quad_clean.evt
Size (bytes)638,665,92095,924,160
Size609.1 MB 91.5 MB
Events in quadrant A3,130,269647,709
Events in quadrant B3,185,342669,016
Events in quadrant C3,238,156628,031
Events in quadrant D9,365,992524,501

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130612
B0132162
C0134582
D0321767

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A624090.144231%
B6240170.272436%
C6240841.346154%
D6239226636.319923%

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 7560 6241 0 0 0.00% 0.00%
B 7560 6241 0 0 0.00% 0.00%
C 7560 6241 15 15 0.20% 0.24%
D 7559 6240 1996 1996 26.41% 31.99%

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 9617 54.76 812 797 161.1
A 0 226 7266 40.17 812 797 161.1
A 3 137 6567 35.83 812 797 161.1
B 12 111 17467 110.26 813 796 151.2
B 11 111 15267 95.71 813 796 151.2
B 14 111 13513 84.11 813 796 151.2
C 14 238 126210 707.11 773 778 177.4
C 0 239 84220 470.4 773 778 177.4
C 10 9 7892 40.1 773 778 177.4
D 7 238 6152271 37793.47 671 654 162.8
D 8 195 571103 3504.65 671 654 162.8
D 1 52 73291 446.26 671 654 162.8

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