ASTROSAT CZTI

Data Quality Report

Orbit 17751

Creation date: 2024-06-27T17:40:29.247442
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/AS1T03_070T06_9000002642_17751cztM0_level2.evt modeM0/AS1T03_070T06_9000002642_17751cztM0_level2_quad_clean.evt
Size (bytes)569,508,48093,012,480
Size543.1 MB 88.7 MB
Events in quadrant A4,015,676564,351
Events in quadrant B4,264,541565,210
Events in quadrant C4,198,546546,458
Events in quadrant D4,187,416546,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177932
B0182812
C0179462
D0183982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85593714.334619%
B85604114.801402%
C85603704.322430%
D85602923.411215%

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 8829 8560 0 0 0.00% 0.00%
B 8830 8562 5 5 0.06% 0.06%
C 8830 8562 0 0 0.00% 0.00%
D 8830 8562 18 18 0.20% 0.21%

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 17279 76.33 1039 1011 213.1
A 0 226 9048 37.71 1039 1011 213.1
A 3 137 8150 33.5 1039 1011 213.1
B 7 220 104849 518.06 1037 1005 200.4
B 0 219 36172 175.44 1037 1005 200.4
B 10 245 31271 150.99 1037 1005 200.4
C 14 238 152217 643.08 1000 1004 235.1
C 5 218 73505 308.33 1000 1004 235.1
C 3 233 29347 120.54 1000 1004 235.1
D 2 165 92792 379.5 1015 986 241.9
D 5 222 85640 349.94 1015 986 241.9
D 10 70 40736 164.32 1015 986 241.9

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