ASTROSAT CZTI

Data Quality Report

Orbit 41633

Creation date: 2024-06-27T22:30:56.429114
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_035T02_9000005680_41633cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41633cztM0_level2_quad_clean.evt
Size (bytes)519,053,76088,646,400
Size495.0 MB 84.5 MB
Events in quadrant A3,004,880665,257
Events in quadrant B3,791,204637,747
Events in quadrant C4,554,672566,008
Events in quadrant D7,461,569452,713

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120412
B0146182
C0167192
D0257142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5172170.328693%
B51724208.120650%
C517262312.045630%
D5172150829.156999%

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 7175 5173 2 2 0.03% 0.04%
B 7175 5173 254 254 3.54% 4.91%
C 7175 5173 561 561 7.82% 10.84%
D 7175 5173 1525 1525 21.25% 29.48%

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 539586 4257.77 626 614 126.6
A 2 79 25046 193.01 626 614 126.6
A 13 254 9867 73.1 626 614 126.6
B 0 186 1326274 11501.45 607 593 115.3
B 5 255 41163 351.98 607 593 115.3
B 0 190 24624 208.49 607 593 115.3
C 0 15 1525279 11640.77 563 567 131.0
C 0 10 518842 3956.89 563 567 131.0
C 15 214 215098 1637.89 563 567 131.0
D 12 79 4692642 34629.16 553 537 135.5
D 13 249 387482 2855.77 553 537 135.5
D 10 255 72754 532.98 553 537 135.5

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