ASTROSAT CZTI

Data Quality Report

Orbit 37017

Creation date: 2024-06-27T21:34:20.669618
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/AS1C07_015T06_9000005264_37017cztM0_level2.evt modeM0/AS1C07_015T06_9000005264_37017cztM0_level2_quad_clean.evt
Size (bytes)325,992,96060,523,200
Size310.9 MB 57.7 MB
Events in quadrant A1,726,648406,604
Events in quadrant B2,314,689402,419
Events in quadrant C1,983,615410,051
Events in quadrant D3,605,877361,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073412
B091691
C079811
D0131591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A354320.056449%
B35431815.108665%
C3543260.733841%
D354348813.773638%

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 5335 3544 1 1 0.02% 0.03%
B 5335 3544 142 142 2.66% 4.01%
C 5335 3544 24 24 0.45% 0.68%
D 5335 3544 428 428 8.02% 12.08%

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 132470 1611.04 405 397 82.0
A 13 6 16638 198.11 405 397 82.0
A 13 254 4793 53.62 405 397 82.0
B 5 184 396463 5186.81 394 383 76.4
B 5 172 200836 2625.0 394 383 76.4
B 0 213 52624 684.11 394 383 76.4
C 15 214 147373 1563.09 401 404 94.0
C 12 249 117832 1248.91 401 404 94.0
C 1 23 47265 498.39 401 404 94.0
D 1 52 1476980 15925.73 377 367 92.7
D 2 250 462417 4983.35 377 367 92.7
D 2 153 58190 623.64 377 367 92.7

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