ASTROSAT CZTI

Data Quality Report

Orbit 38955

Creation date: 2024-06-27T21:58:35.836623
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/AS1T05_064T01_9000005416_38955cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38955cztM0_level2_quad_clean.evt
Size (bytes)355,386,24091,056,960
Size338.9 MB 86.8 MB
Events in quadrant A3,603,768606,431
Events in quadrant B2,497,648633,839
Events in quadrant C2,504,082619,642
Events in quadrant D4,165,766551,605

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137903
B0105612
C0103002
D0158232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49332244.540847%
B4933661.337928%
C4933190.385161%
D49332495.047638%

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 7055 4934 222 222 3.15% 4.50%
B 7055 4934 45 45 0.64% 0.91%
C 7055 4934 16 16 0.23% 0.32%
D 7055 4934 261 261 3.70% 5.29%

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 13 248 984213 8691.46 559 548 113.2
A 10 83 416642 3676.52 559 548 113.2
A 6 10 19915 171.12 559 548 113.2
B 5 172 178938 1652.69 569 554 107.9
B 10 246 40942 374.19 569 554 107.9
B 0 230 23501 212.6 569 554 107.9
C 15 214 204803 1562.68 570 574 130.7
C 15 159 24959 186.58 570 574 130.7
C 14 254 23208 173.19 570 574 130.7
D 12 235 629049 4737.24 553 540 132.7
D 2 250 609908 4592.97 553 540 132.7
D 12 227 272129 2047.04 553 540 132.7

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