ASTROSAT CZTI

Data Quality Report

Orbit 37336

Creation date: 2024-06-27T21:38:38.593274
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_030T02_9000005310_37336cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37336cztM0_level2_quad_clean.evt
Size (bytes)464,325,12054,956,160
Size442.8 MB 52.4 MB
Events in quadrant A3,029,878324,578
Events in quadrant B2,817,339327,684
Events in quadrant C3,673,771314,522
Events in quadrant D4,158,805303,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123593
B0119392
C0144712
D0161502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5634330.585729%
B5634410.727725%
C56341111.970181%
D56343826.780263%

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 7246 5635 19 19 0.26% 0.34%
B 7246 5635 22 22 0.30% 0.39%
C 7246 5635 102 102 1.41% 1.81%
D 7246 5635 339 339 4.68% 6.02%

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 290101 2179.58 649 636 132.8
A 13 248 159256 1194.36 649 636 132.8
A 7 3 31831 234.89 649 636 132.8
B 5 172 134084 1084.21 643 625 123.1
B 0 190 104069 840.37 643 625 123.1
B 12 111 15458 120.5 643 625 123.1
C 1 23 541360 3690.42 626 629 146.5
C 0 10 244699 1665.75 626 629 146.5
C 15 214 237474 1616.44 626 629 146.5
D 10 253 1054146 6879.62 619 600 153.1
D 2 249 363598 2370.36 619 600 153.1
D 5 32 143929 935.93 619 600 153.1

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