ASTROSAT CZTI

Data Quality Report

Orbit 41503

Creation date: 2024-06-27T22:29:51.921701
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/AS1A12_035T02_9000005676_41503cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41503cztM0_level2_quad_clean.evt
Size (bytes)332,219,52090,388,800
Size316.8 MB 86.2 MB
Events in quadrant A2,785,536633,836
Events in quadrant B2,425,082648,940
Events in quadrant C3,171,480573,651
Events in quadrant D3,530,821534,700

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111833
B0103552
C0122582
D0137452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4937220.445615%
B4937140.283573%
C49372565.185335%
D49372895.853757%

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 7000 4938 6 6 0.09% 0.12%
B 7000 4938 1 1 0.01% 0.02%
C 7000 4938 254 254 3.63% 5.14%
D 7000 4938 281 281 4.01% 5.69%

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 488258 4110.94 584 573 118.6
A 2 79 18420 150.44 584 573 118.6
A 13 6 12085 97.04 584 573 118.6
B 0 190 82695 749.79 583 567 109.5
B 0 245 23318 207.71 583 567 109.5
B 15 54 17699 156.41 583 567 109.5
C 0 10 628308 4978.71 549 554 126.1
C 15 214 203916 1612.86 549 554 126.1
C 14 254 127396 1005.98 549 554 126.1
D 12 128 437503 3243.67 554 538 134.7
D 12 16 225517 1670.06 554 538 134.7
D 12 218 220669 1634.07 554 538 134.7

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