ASTROSAT CZTI

Data Quality Report

Orbit 26078

Creation date: 2024-06-27T19:24:34.690871
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/AS1A09_113T01_9000003768_26078cztM0_level2.evt modeM0/AS1A09_113T01_9000003768_26078cztM0_level2_quad_clean.evt
Size (bytes)478,638,720103,743,360
Size456.5 MB 98.9 MB
Events in quadrant A3,401,428667,892
Events in quadrant B3,555,307676,772
Events in quadrant C3,442,754646,166
Events in quadrant D3,599,459642,377

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148120
B0151630
C0148400
D0153950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7302270.369762%
B7303510.698343%
C7303580.794194%
D7303340.465562%

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 8992 7303 0 0 0.00% 0.00%
B 8993 7303 8 8 0.09% 0.11%
C 8993 7303 0 0 0.00% 0.00%
D 8993 7304 13 13 0.14% 0.18%

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 11846 61.91 881 863 177.4
A 3 137 8210 41.41 881 863 177.4
A 0 226 7522 37.53 881 863 177.4
B 0 245 24507 140.76 881 858 168.0
B 10 247 22609 129.46 881 858 168.0
B 15 33 22343 127.88 881 858 168.0
C 14 238 135105 678.73 844 849 197.8
C 3 233 11641 54.56 844 849 197.8
C 2 16 8494 38.65 844 849 197.8
D 1 52 267091 1297.35 850 830 205.2
D 7 80 79494 383.29 850 830 205.2
D 2 234 28125 132.99 850 830 205.2

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