ASTROSAT CZTI

Data Quality Report

Orbit 21802

Creation date: 2024-06-27T18:32:25.165932
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_006T02_9000003228_21802cztM0_level2.evt modeM0/AS1A07_006T02_9000003228_21802cztM0_level2_quad_clean.evt
Size (bytes)494,576,64076,357,440
Size471.7 MB 72.8 MB
Events in quadrant A3,529,408457,222
Events in quadrant B3,731,268465,122
Events in quadrant C3,493,304451,185
Events in quadrant D3,736,141438,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150952
B0154902
C0149412
D0159322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71881211.683361%
B71881822.531998%
C71881832.545910%
D71881351.878130%

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 8698 7190 0 0 0.00% 0.00%
B 8698 7190 27 27 0.31% 0.38%
C 8698 7189 0 0 0.00% 0.00%
D 8698 7190 27 27 0.31% 0.38%

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 6 16 88625 488.72 892 872 179.6
A 13 254 13603 70.9 892 872 179.6
A 0 226 7684 37.94 892 872 179.6
B 3 64 115906 665.44 896 875 172.9
B 12 111 20529 113.7 896 875 172.9
B 0 190 20408 113.0 896 875 172.9
C 14 238 132943 646.53 860 866 204.3
C 13 61 6025 25.25 860 866 204.3
C 8 128 4210 16.37 860 866 204.3
D 13 153 169628 784.41 870 842 215.2
D 1 52 126982 586.22 870 842 215.2
D 13 104 50905 232.66 870 842 215.2

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