ASTROSAT CZTI

Data Quality Report

Orbit 20005

Creation date: 2024-06-27T18:09:58.517360
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/AS1A06_002T02_9000002982_20005cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_20005cztM0_level2_quad_clean.evt
Size (bytes)481,936,32084,574,080
Size459.6 MB 80.7 MB
Events in quadrant A3,486,510540,501
Events in quadrant B3,638,512541,287
Events in quadrant C3,493,053521,371
Events in quadrant D3,553,565522,113

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
A0142642
B0149612
C0142662
D0145362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62461111.777137%
B62461682.689721%
C62461362.177394%
D62461482.369516%

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 7511 6248 22 22 0.29% 0.35%
B 7511 6248 35 35 0.47% 0.56%
C 7511 6248 0 0 0.00% 0.00%
D 7511 6248 23 23 0.31% 0.37%

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 14 238 172009 1005.56 852 838 170.2
A 14 254 34380 197.05 852 838 170.2
A 0 226 7527 39.3 852 838 170.2
B 7 220 206965 1327.32 841 823 155.3
B 0 197 20762 128.38 841 823 155.3
B 12 111 18160 111.63 841 823 155.3
C 14 238 128926 677.06 820 829 189.2
C 0 207 97865 512.88 820 829 189.2
C 3 233 53910 280.56 820 829 189.2
D 1 52 239280 1191.17 833 813 200.2
D 12 218 68780 339.5 833 813 200.2
D 7 96 42117 206.32 833 813 200.2

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