ASTROSAT CZTI

Data Quality Report

Orbit 47273

Creation date: 2024-06-27T23:33:36.559025
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/AS1A13_025T01_9000006312_47273cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47273cztM0_level2_quad_clean.evt
Size (bytes)426,683,52082,716,480
Size406.9 MB 78.9 MB
Events in quadrant A5,528,558542,801
Events in quadrant B2,603,270589,789
Events in quadrant C2,288,184556,472
Events in quadrant D4,983,571462,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020240341
B011292144
C010672139
D018653444

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01031
B01044
C01042
D01042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50303226.401590%
B5044891.764473%
C5045220.436075%
D501853610.681546%

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 6254 5057 87 87 1.39% 1.72%
B 6268 5068 27 27 0.43% 0.53%
C 6298 5073 10 10 0.16% 0.20%
D 6294 5056 640 640 10.17% 12.66%

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 2666086 22729.06 563 550 117.3
A 9 191 677386 5771.39 563 550 117.3
A 13 254 8190 65.15 563 550 117.3
B 5 32 120902 1053.38 577 561 114.2
B 0 200 71447 620.49 577 561 114.2
B 12 3 45047 389.4 577 561 114.2
C 14 254 46150 340.88 564 568 133.7
C 3 233 19303 140.11 564 568 133.7
C 12 2 8267 57.58 564 568 133.7
D 6 112 2303196 16802.8 544 527 137.0
D 1 47 257256 1873.38 544 527 137.0
D 2 249 178194 1296.45 544 527 137.0

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