ASTROSAT CZTI

Data Quality Report

Orbit 07862

Creation date: 2024-06-27T15:24:56.460436
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_077T02_9000001076_07862cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07862cztM0_level2_quad_clean.evt
Size (bytes)263,730,24058,806,720
Size251.5 MB 56.1 MB
Events in quadrant A1,712,255385,351
Events in quadrant B1,969,351388,436
Events in quadrant C1,808,481391,005
Events in quadrant D2,253,436363,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D081

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089621569
B097821717
C092471640
D0107541676

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08812
B08814
C08812
D08814

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3551862.421853%
B35341393.933220%
C3555822.306610%
D35491413.972950%

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 4858 3729 0 0 0.00% 0.00%
B 4862 3718 53 53 1.09% 1.43%
C 4854 3750 0 0 0.00% 0.00%
D 4855 3745 25 25 0.51% 0.67%

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 15 234 9603 101.19 440 430 90.7
A 3 1 4706 47.17 440 430 90.7
A 0 226 4153 41.07 440 430 90.7
B 4 239 188586 2226.45 437 427 84.5
B 4 173 39913 467.23 437 427 84.5
B 15 204 20576 238.42 437 427 84.5
C 1 16 103993 1015.53 433 436 102.0
C 8 229 9862 92.44 433 436 102.0
C 13 61 3405 29.12 433 436 102.0
D 1 52 470398 4461.74 427 414 105.3
D 14 34 95522 902.9 427 414 105.3
D 2 152 46629 438.74 427 414 105.3

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