ASTROSAT CZTI

Data Quality Report

Orbit 40893

Creation date: 2024-06-27T22:21:50.983376
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_097T01_9000005574_40893cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40893cztM0_level2_quad_clean.evt
Size (bytes)1,998,990,720434,756,160
Size1.9 GB 414.6 MB
Events in quadrant A14,229,6122,949,351
Events in quadrant B20,697,8962,905,557
Events in quadrant C13,395,2352,921,774
Events in quadrant D23,573,1462,515,744

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05540
B05540
C05540
D05540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0586077
B0800048
C0572346
D0888386

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27196730.268422%
B2719520687.604339%
C271951590.584666%
D2719521988.082368%

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 38171 27202 20 20 0.05% 0.07%
B 38171 27201 1454 1454 3.81% 5.35%
C 38171 27201 119 119 0.31% 0.44%
D 38171 27201 1925 1925 5.04% 7.08%

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 2368819 3935.25 2950 2888 601.2
A 13 248 197436 323.59 2950 2888 601.2
A 2 79 119303 193.63 2950 2888 601.2
B 5 255 5303111 9637.66 2880 2791 550.0
B 4 171 2476902 4498.72 2880 2791 550.0
B 0 229 495080 895.14 2880 2791 550.0
C 15 214 1141685 1697.28 2892 2912 670.9
C 14 254 560812 831.52 2892 2912 670.9
C 0 10 261747 385.78 2892 2912 670.9
D 12 79 3591757 5279.91 2788 2714 679.8
D 12 233 2594498 3812.82 2788 2714 679.8
D 12 128 2108251 3097.5 2788 2714 679.8

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