ASTROSAT CZTI

Data Quality Report

Orbit 37943

Creation date: 2024-06-27T21:46:27.336852
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_082T01_9000005356_37943cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37943cztM0_level2_quad_clean.evt
Size (bytes)441,311,04093,885,120
Size420.9 MB 89.5 MB
Events in quadrant A2,839,913621,205
Events in quadrant B2,878,348629,161
Events in quadrant C2,703,354638,210
Events in quadrant D4,579,305579,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116013
B0120422
C0113222
D0172312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5361170.317105%
B5361530.988622%
C5361190.354411%
D53614047.535907%

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 7364 5362 8 8 0.11% 0.15%
B 7364 5362 42 42 0.57% 0.78%
C 7364 5362 10 10 0.14% 0.19%
D 7364 5362 380 380 5.16% 7.09%

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 387999 3173.02 610 599 122.1
A 15 222 31691 254.66 610 599 122.1
A 13 248 27866 223.33 610 599 122.1
B 5 172 310521 2695.3 602 587 115.0
B 0 230 65928 568.23 602 587 115.0
B 0 197 64337 554.39 602 587 115.0
C 15 214 228527 1660.52 590 594 137.3
C 0 10 131805 955.89 590 594 137.3
C 14 254 32729 234.11 590 594 137.3
D 1 52 1442068 10198.64 578 561 141.3
D 9 49 421181 2975.88 578 561 141.3
D 12 233 114004 802.61 578 561 141.3

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