ASTROSAT CZTI

Data Quality Report

Orbit 22531

Creation date: 2024-06-27T18:42:24.834497
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/AS1A07_049T01_9000003344_22531cztM0_level2.evt modeM0/AS1A07_049T01_9000003344_22531cztM0_level2_quad_clean.evt
Size (bytes)455,760,00092,424,960
Size434.6 MB 88.1 MB
Events in quadrant A3,141,957591,654
Events in quadrant B3,311,872600,710
Events in quadrant C3,166,299576,607
Events in quadrant D3,725,860561,613

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136591
B0140281
C0136411
D0155481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6713390.580962%
B6713560.834202%
C6713560.834202%
D67131712.547296%

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 7573 6713 0 0 0.00% 0.00%
B 7573 6713 9 9 0.12% 0.13%
C 7573 6713 0 0 0.00% 0.00%
D 7573 6713 132 132 1.74% 1.97%

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 13 254 10283 57.87 812 793 164.0
A 3 1 9242 51.52 812 793 164.0
A 0 226 7201 39.08 812 793 164.0
B 0 228 68430 438.68 807 785 154.2
B 15 33 57476 367.64 807 785 154.2
B 12 111 19342 120.34 807 785 154.2
C 14 238 123660 668.24 777 781 183.9
C 10 22 6710 32.24 777 781 183.9
C 13 61 5418 25.22 777 781 183.9
D 1 52 495541 2590.49 785 762 191.0
D 13 104 75613 391.89 785 762 191.0
D 7 223 64589 334.18 785 762 191.0

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