ASTROSAT CZTI

Data Quality Report

Orbit 41248

Creation date: 2024-06-27T22:26:30.634647
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_044T17_9000005636_41248cztM0_level2.fits modeM0/AS1A12_044T17_9000005636_41248cztM0_level2_quad_clean.evt
Size (bytes)388,549,44092,736,000
Size370.5 MB 88.4 MB
Events in quadrant A3,153,387633,955
Events in quadrant B4,066,389603,109
Events in quadrant C3,267,162602,861
Events in quadrant D3,442,620560,374

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129583
B0162262
C0134132
D0143332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5823230.394985%
B58234668.002748%
C58231051.803194%
D58231692.902284%

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 7106 5824 10 10 0.14% 0.17%
B 7106 5824 336 336 4.73% 5.77%
C 7106 5824 99 99 1.39% 1.70%
D 7106 5824 145 145 2.04% 2.49%

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 573302 4478.43 624 610 127.9
A 15 252 78893 612.17 624 610 127.9
A 0 8 41313 318.3 624 610 127.9
B 0 229 984966 8422.45 606 589 116.9
B 0 186 636891 5444.28 606 589 116.9
B 15 85 29592 248.15 606 589 116.9
C 9 54 296388 2089.87 603 605 141.5
C 0 10 255820 1803.24 603 605 141.5
C 15 214 245332 1729.13 603 605 141.5
D 2 249 362595 2496.96 601 583 145.0
D 5 222 353909 2437.05 601 583 145.0
D 13 249 271837 1870.96 601 583 145.0

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