ASTROSAT CZTI

Data Quality Report

Orbit 24447

Creation date: 2024-06-27T19:06:06.639761
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_183T01_9000003606_24447cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24447cztM0_level2_quad_clean.evt
Size (bytes)458,951,040119,609,280
Size437.7 MB 114.1 MB
Events in quadrant A3,149,393819,092
Events in quadrant B3,375,758843,321
Events in quadrant C3,223,434778,935
Events in quadrant D3,727,066745,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133562
B0140592
C0135542
D0152562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6245580.928743%
B6244971.553491%
C6244891.425368%
D6244620.992953%

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 7520 6246 0 0 0.00% 0.00%
B 7519 6245 17 17 0.23% 0.27%
C 7519 6245 1 1 0.01% 0.02%
D 7519 6245 31 31 0.41% 0.50%

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 10518 59.65 814 802 162.9
A 4 2 9467 53.2 814 802 162.9
A 0 226 7031 38.24 814 802 162.9
B 3 64 177112 1155.29 816 796 152.6
B 12 111 17530 109.64 816 796 152.6
B 11 111 15300 95.03 816 796 152.6
C 14 238 126104 707.66 770 776 177.1
C 2 16 73012 407.88 770 776 177.1
C 3 233 21325 116.03 770 776 177.1
D 1 52 375255 2037.23 771 749 183.8
D 12 218 278074 1508.58 771 749 183.8
D 8 195 105376 569.15 771 749 183.8

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