ASTROSAT CZTI

Data Quality Report

Orbit 36743

Creation date: 2024-06-27T21:31:05.312874
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_101T01_9000005238_36743cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36743cztM0_level2_quad_clean.evt
Size (bytes)458,677,44057,510,720
Size437.4 MB 54.8 MB
Events in quadrant A2,716,117342,809
Events in quadrant B2,750,702349,012
Events in quadrant C3,064,278334,316
Events in quadrant D4,971,484315,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116182
B0118031
C0125491
D0186481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A571230.052521%
B5712140.245098%
C5712911.593137%
D571268111.922269%

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 7145 5713 0 0 0.00% 0.00%
B 7145 5713 4 4 0.06% 0.07%
C 7145 5713 81 81 1.13% 1.42%
D 7145 5713 684 684 9.57% 11.97%

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 188877 1426.34 648 633 132.0
A 9 143 12366 88.9 648 633 132.0
A 13 254 9787 69.36 648 633 132.0
B 0 221 52422 414.73 646 629 124.9
B 5 172 51598 408.14 646 629 124.9
B 0 213 43727 345.11 646 629 124.9
C 15 214 239924 1632.6 623 627 146.6
C 0 10 200779 1365.53 623 627 146.6
C 14 254 192144 1306.62 623 627 146.6
D 12 227 1693076 11351.84 608 591 149.1
D 12 6 351148 2351.26 608 591 149.1
D 13 171 193565 1294.32 608 591 149.1

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