ASTROSAT CZTI

Data Quality Report

Orbit 20915

Creation date: 2024-06-27T18:21:09.268061
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/AS1C04_001T01_9000003082_20915cztM0_level2.evt modeM0/AS1C04_001T01_9000003082_20915cztM0_level2_quad_clean.evt
Size (bytes)440,789,760133,076,160
Size420.4 MB 126.9 MB
Events in quadrant A3,354,397919,452
Events in quadrant B3,479,960929,593
Events in quadrant C3,061,114876,568
Events in quadrant D3,034,870874,750

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01262
B01262
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014115240
B014348185
C013100172
D013236160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6153721.170161%
B61631131.833523%
C6167621.005351%
D6170300.486224%

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 7670 6234 21 21 0.27% 0.34%
B 7669 6234 48 48 0.63% 0.77%
C 7669 6239 0 0 0.00% 0.00%
D 7669 6232 8 8 0.10% 0.13%

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 6 16 171505 1074.25 795 781 158.9
A 5 16 116176 726.1 795 781 158.9
A 8 255 12646 74.66 795 781 158.9
B 7 220 191381 1302.96 788 770 146.3
B 3 64 140266 953.55 788 770 146.3
B 0 219 31606 210.79 788 770 146.3
C 14 238 122384 710.98 749 754 171.1
C 7 247 7643 40.27 749 754 171.1
C 13 61 5292 26.53 749 754 171.1
D 1 52 61431 336.53 764 743 180.3
D 1 20 51485 281.38 764 743 180.3
D 2 234 24527 131.89 764 743 180.3

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