ASTROSAT CZTI

Data Quality Report

Orbit 06772

Creation date: 2024-06-27T15:11:29.663408
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/AS1G06_086T02_9000000936_06772cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06772cztM0_level2_quad_clean.evt
Size (bytes)477,072,00062,965,440
Size455.0 MB 60.0 MB
Events in quadrant A3,069,110373,042
Events in quadrant B3,120,309379,550
Events in quadrant C3,531,476368,213
Events in quadrant D4,308,414354,550

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130832
B0132041
C0144851
D0171241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171761.231567%
B6171721.166748%
C61711332.155242%
D61711592.576568%

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 7426 6172 1 1 0.01% 0.02%
B 7426 6172 1 1 0.01% 0.02%
C 7426 6172 70 70 0.94% 1.13%
D 7426 6172 61 61 0.82% 0.99%

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 28073 174.18 778 762 156.8
A 13 251 15766 95.69 778 762 156.8
A 4 2 11750 70.08 778 762 156.8
B 0 214 33779 223.5 781 765 147.7
B 4 48 28351 186.75 781 765 147.7
B 4 81 24937 163.64 781 765 147.7
C 9 247 609181 3507.23 747 750 173.5
C 13 61 6085 30.75 747 750 173.5
C 9 16 4861 23.7 747 750 173.5
D 8 195 452850 2488.07 743 721 181.7
D 12 220 409131 2247.48 743 721 181.7
D 2 216 282983 1553.29 743 721 181.7

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