ASTROSAT CZTI

Data Quality Report

Orbit 15240

Creation date: 2024-06-27T17:05:43.321034
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/AS1T02_072T01_9000002250_15240cztM0_level2.evt modeM0/AS1T02_072T01_9000002250_15240cztM0_level2_quad_clean.evt
Size (bytes)516,159,360129,971,520
Size492.2 MB 124.0 MB
Events in quadrant A3,207,348901,954
Events in quadrant B3,830,475894,472
Events in quadrant C3,815,378873,193
Events in quadrant D4,361,304836,862

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135993
B0154902
C0154212
D0171642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6158300.487171%
B61582754.465736%
C61581302.111075%
D61581121.818772%

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 7479 6160 5 5 0.07% 0.08%
B 7479 6160 181 181 2.42% 2.94%
C 7479 6159 73 73 0.98% 1.19%
D 7479 6160 59 59 0.79% 0.96%

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 12 189 98737 619.95 790 776 158.0
A 9 143 29894 184.27 790 776 158.0
A 13 248 25479 156.33 790 776 158.0
B 10 16 388041 2728.32 778 762 141.9
B 3 64 222353 1561.07 778 762 141.9
B 0 229 90510 632.26 778 762 141.9
C 4 254 460440 2739.63 746 753 167.8
C 3 233 399880 2378.71 746 753 167.8
C 7 247 29005 168.38 746 753 167.8
D 2 16 1179991 6583.54 749 730 179.1
D 7 38 168956 939.17 749 730 179.1
D 1 255 53354 293.79 749 730 179.1

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