ASTROSAT CZTI

Data Quality Report

Orbit 37758

Creation date: 2024-06-27T21:44:03.973127
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/AS1A11_106T02_9000005344_37758cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37758cztM0_level2_quad_clean.evt
Size (bytes)493,896,96091,572,480
Size471.0 MB 87.3 MB
Events in quadrant A3,099,328597,534
Events in quadrant B3,351,642590,539
Events in quadrant C3,783,297589,701
Events in quadrant D4,316,149576,272

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132173
B0141082
C0151332
D0172302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5997400.667000%
B59971762.934801%
C59972964.935801%
D59975238.721027%

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 7280 5998 29 29 0.40% 0.48%
B 7280 5998 151 151 2.07% 2.52%
C 7280 5998 298 298 4.09% 4.97%
D 7280 5998 494 494 6.79% 8.24%

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 366423 2745.46 659 645 133.2
A 9 143 102775 766.57 659 645 133.2
A 15 254 38861 286.84 659 645 133.2
B 5 255 294061 2341.69 649 634 125.3
B 4 81 253839 2020.7 649 634 125.3
B 5 172 78974 625.19 649 634 125.3
C 1 23 719761 4884.39 631 636 147.2
C 15 214 248977 1686.76 631 636 147.2
C 0 207 175588 1188.3 631 636 147.2
D 12 227 628333 4117.3 619 600 152.5
D 2 250 504532 3305.29 619 600 152.5
D 2 249 243596 1593.81 619 600 152.5

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