ASTROSAT CZTI

Data Quality Report

Orbit 12635

Creation date: 2024-06-27T16:30:18.339061
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/AS1G08_071T01_9000001874_12635cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12635cztM0_level2_quad_clean.evt
Size (bytes)515,381,76097,125,120
Size491.5 MB 92.6 MB
Events in quadrant A3,119,549633,722
Events in quadrant B4,681,779615,236
Events in quadrant C3,221,826650,834
Events in quadrant D4,166,021609,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133893
B0181462
C0136932
D0167982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6182240.388224%
B61824847.829181%
C6182340.549984%
D61821131.827887%

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 7548 6184 0 0 0.00% 0.00%
B 7548 6184 335 335 4.44% 5.42%
C 7548 6184 14 14 0.19% 0.23%
D 7548 6184 106 106 1.40% 1.71%

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 8 15 27689 169.1 797 782 159.1
A 12 189 20100 121.4 797 782 159.1
A 13 248 7999 45.35 797 782 159.1
B 4 239 1020339 7037.09 778 763 144.9
B 0 85 290794 2001.79 778 763 144.9
B 11 51 109497 750.48 778 763 144.9
C 15 208 111409 610.81 793 800 181.1
C 12 4 14014 72.97 793 800 181.1
C 13 61 5711 27.12 793 800 181.1
D 10 157 625694 3365.89 779 759 185.7
D 1 52 255804 1373.67 779 759 185.7
D 1 255 170657 915.07 779 759 185.7

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