ASTROSAT CZTI

Data Quality Report

Orbit 38395

Creation date: 2024-06-27T21:52:11.083116
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/AS1A12_025T10_9000005384_38395cztM0_level2.fits modeM0/AS1A12_025T10_9000005384_38395cztM0_level2_quad_clean.evt
Size (bytes)491,060,160100,126,080
Size468.3 MB 95.5 MB
Events in quadrant A3,753,182683,841
Events in quadrant B3,274,548694,120
Events in quadrant C2,943,250660,449
Events in quadrant D7,728,634563,134

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150433
B0138472
C0125502
D0271252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6163510.827519%
B6163901.460328%
C6163110.178485%
D616371411.585267%

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 8849 6165 29 29 0.33% 0.47%
B 8849 6165 51 51 0.58% 0.83%
C 8849 6165 6 6 0.07% 0.10%
D 8849 6165 704 704 7.96% 11.42%

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 10 83 446655 3204.88 687 672 139.2
A 12 16 339394 2434.09 687 672 139.2
A 9 143 128766 920.5 687 672 139.2
B 0 183 182991 1379.23 685 665 132.2
B 8 3 154362 1162.67 685 665 132.2
B 4 232 47790 356.48 685 665 132.2
C 15 214 256066 1626.52 671 674 157.0
C 12 249 49758 312.6 671 674 157.0
C 15 159 8716 51.22 671 674 157.0
D 10 203 3745139 23681.2 647 628 158.1
D 2 16 917045 5795.64 647 628 158.1
D 13 249 95214 598.18 647 628 158.1

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