ASTROSAT CZTI

Data Quality Report

Orbit 39127

Creation date: 2024-06-27T22:01:03.380508
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/AS1C06_010T05_9000005436_39127cztM0_level2.fits modeM0/AS1C06_010T05_9000005436_39127cztM0_level2_quad_clean.evt
Size (bytes)374,212,80094,069,440
Size356.9 MB 89.7 MB
Events in quadrant A2,809,421659,798
Events in quadrant B2,634,465659,674
Events in quadrant C2,518,904613,083
Events in quadrant D5,494,848560,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112743
B0109442
C0103582
D0199642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5076220.433412%
B5076400.788022%
C507620.039401%
D50762625.161545%

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 7078 5077 7 7 0.10% 0.14%
B 7078 5077 23 23 0.32% 0.45%
C 7078 5077 0 0 0.00% 0.00%
D 7078 5077 256 256 3.62% 5.04%

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 424591 3520.75 601 590 120.4
A 9 143 37688 308.05 601 590 120.4
A 13 254 7760 59.54 601 590 120.4
B 5 172 132173 1195.12 587 573 110.1
B 0 230 62220 559.84 587 573 110.1
B 0 183 40716 364.56 587 573 110.1
C 15 214 218412 1659.94 571 574 131.2
C 3 233 34431 257.99 571 574 131.2
C 9 187 32515 243.39 571 574 131.2
D 12 235 2472529 17754.49 569 553 139.2
D 2 249 224748 1610.24 569 553 139.2
D 12 233 191454 1371.11 569 553 139.2

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