ASTROSAT CZTI

Data Quality Report

Orbit 18257

Creation date: 2024-06-27T17:47:29.206187
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_019T01_9000002718_18257cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18257cztM0_level2_quad_clean.evt
Size (bytes)505,416,96098,061,120
Size482.0 MB 93.5 MB
Events in quadrant A3,564,873633,643
Events in quadrant B3,625,045637,305
Events in quadrant C3,432,751602,847
Events in quadrant D4,198,596598,031

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153792
B0155131
C0149581
D0172281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71481682.350308%
B71491522.126171%
C71491562.182123%
D71491772.475871%

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 7283 7149 16 16 0.22% 0.22%
B 7284 7150 6 6 0.08% 0.08%
C 7284 7150 1 1 0.01% 0.01%
D 7284 7150 30 30 0.41% 0.42%

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 15 174 185124 1036.09 871 852 177.9
A 10 228 18719 100.46 871 852 177.9
A 4 2 12192 63.76 871 852 177.9
B 7 220 153270 896.26 869 846 170.1
B 4 171 48561 280.57 869 846 170.1
B 12 111 19560 110.04 869 846 170.1
C 14 238 126650 638.74 832 835 197.0
C 0 207 45201 225.24 832 835 197.0
C 3 233 12051 56.94 832 835 197.0
D 7 238 701786 3386.8 850 824 207.0
D 1 52 176592 849.25 850 824 207.0
D 14 34 43835 207.81 850 824 207.0

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