ASTROSAT CZTI

Data Quality Report

Orbit 38392

Creation date: 2024-06-27T21:52:07.533880
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_025T09_9000005382_38392cztM0_level2.fits modeM0/AS1A12_025T09_9000005382_38392cztM0_level2_quad_clean.evt
Size (bytes)427,968,00085,930,560
Size408.1 MB 81.9 MB
Events in quadrant A2,767,088597,911
Events in quadrant B2,855,739610,226
Events in quadrant C2,830,044565,829
Events in quadrant D6,993,012470,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113843
B0119682
C0116092
D0241912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5101240.470496%
B5101290.568516%
C51011322.587728%
D510178215.330327%

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 7074 5102 16 16 0.23% 0.31%
B 7074 5102 12 12 0.17% 0.24%
C 7074 5102 119 119 1.68% 2.33%
D 7074 5102 929 929 13.13% 18.21%

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 387336 3388.55 562 551 114.1
A 12 16 87460 761.39 562 551 114.1
A 9 143 39781 343.69 562 551 114.1
B 0 183 542452 5027.89 561 547 107.8
B 0 230 25779 234.11 561 547 107.8
B 0 155 15137 135.37 561 547 107.8
C 14 254 445572 3494.74 545 548 127.3
C 15 214 215944 1691.49 545 548 127.3
C 0 10 40160 311.07 545 548 127.3
D 10 203 2715645 21185.2 523 509 128.2
D 7 223 688077 5364.84 523 509 128.2
D 1 20 617000 4810.25 523 509 128.2

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