ASTROSAT CZTI

Data Quality Report

Orbit 27150

Creation date: 2024-06-27T19:37:01.392259
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_245T01_9000003916_27150cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27150cztM0_level2_quad_clean.evt
Size (bytes)505,618,560100,238,400
Size482.2 MB 95.6 MB
Events in quadrant A3,158,079669,934
Events in quadrant B3,415,235675,194
Events in quadrant C3,072,227644,090
Events in quadrant D5,241,730608,590

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134520
B0141170
C0132120
D0197960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269701.116606%
B6269771.228266%
C62701031.642743%
D62704737.543860%

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 7289 6270 2 2 0.03% 0.03%
B 7289 6270 8 8 0.11% 0.13%
C 7290 6271 0 0 0.00% 0.00%
D 7290 6271 380 380 5.21% 6.06%

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 0 13 27996 169.94 798 782 160.1
A 7 192 21404 128.78 798 782 160.1
A 13 248 18995 113.74 798 782 160.1
B 15 33 161179 1063.15 788 769 150.9
B 3 112 78892 517.77 788 769 150.9
B 0 229 30018 193.85 788 769 150.9
C 14 238 120915 676.38 753 759 177.6
C 2 16 7757 39.39 753 759 177.6
C 15 208 6284 31.1 753 759 177.6
D 1 52 1884589 9591.58 745 731 196.4
D 7 38 270388 1372.95 745 731 196.4
D 2 250 119017 602.25 745 731 196.4

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