ASTROSAT CZTI

Data Quality Report

Orbit 38740

Creation date: 2024-06-27T21:55:50.013135
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_054T01_9000005392_38740cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38740cztM0_level2_quad_clean.evt
Size (bytes)378,360,00087,269,760
Size360.8 MB 83.2 MB
Events in quadrant A3,091,018592,686
Events in quadrant B2,612,431607,368
Events in quadrant C3,024,829567,522
Events in quadrant D4,871,077508,864

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122563
B0111672
C0122872
D0180892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5227400.765257%
B5227320.612206%
C5227931.779223%
D52273015.758561%

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 7080 5228 26 26 0.37% 0.50%
B 7080 5228 9 9 0.13% 0.17%
C 7080 5228 83 83 1.17% 1.59%
D 7080 5228 236 236 3.33% 4.51%

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 0 8 396560 3294.42 588 575 120.2
A 10 83 387223 3216.74 588 575 120.2
A 9 143 30701 250.63 588 575 120.2
B 4 171 175581 1530.02 583 567 114.4
B 0 189 110653 962.4 583 567 114.4
B 12 111 14192 119.11 583 567 114.4
C 14 254 399298 3000.86 568 571 132.9
C 15 214 233700 1754.55 568 571 132.9
C 0 10 127824 957.72 568 571 132.9
D 2 16 988368 7052.94 564 548 140.1
D 2 249 825732 5891.73 564 548 140.1
D 12 235 329103 2345.85 564 548 140.1

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