ASTROSAT CZTI

Data Quality Report

Orbit 20046

Creation date: 2024-06-27T18:10:31.432277
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/AS1A05_180T01_9000002986_20046cztM0_level2.evt modeM0/AS1A05_180T01_9000002986_20046cztM0_level2_quad_clean.evt
Size (bytes)528,592,32075,712,320
Size504.1 MB 72.2 MB
Events in quadrant A3,829,152474,756
Events in quadrant B3,637,243475,252
Events in quadrant C3,630,618450,352
Events in quadrant D4,476,457444,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154632
B0147602
C0145462
D0174222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64141241.933271%
B6414931.449953%
C64141121.746180%
D64141642.556907%

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 7739 6415 25 25 0.32% 0.39%
B 7739 6415 0 0 0.00% 0.00%
C 7739 6415 0 0 0.00% 0.00%
D 7739 6415 71 71 0.92% 1.11%

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 14 238 207056 1120.58 938 926 183.9
A 14 254 8538 41.38 938 926 183.9
A 0 226 8025 38.59 938 926 183.9
B 12 111 19559 109.22 922 903 170.8
B 11 111 16992 94.19 922 903 170.8
B 14 111 15373 84.71 922 903 170.8
C 14 238 143560 710.43 881 891 200.8
C 3 233 31175 150.8 881 891 200.8
C 5 4 19014 90.25 881 891 200.8
D 1 52 719394 3324.36 898 875 216.1
D 12 218 304838 1406.34 898 875 216.1
D 7 96 37541 169.64 898 875 216.1

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