ASTROSAT CZTI

Data Quality Report

Orbit 26924

Creation date: 2024-06-27T19:34:33.548351
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/AS1A09_134T01_9000003896_26924cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26924cztM0_level2_quad_clean.evt
Size (bytes)1,024,902,72053,176,320
Size977.4 MB 50.7 MB
Events in quadrant A13,087,45784,131
Events in quadrant B11,233,705308,964
Events in quadrant C3,105,464413,980
Events in quadrant D3,231,224403,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0427140
B0372730
C0123180
D0129520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5660510590.194346%
B5661398870.446918%
C5661861.519166%
D5661440.777248%

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 7064 5659 4709 4709 66.66% 83.21%
B 7066 5662 3224 3224 45.63% 56.94%
C 7066 5663 4 4 0.06% 0.07%
D 7066 5663 29 29 0.41% 0.51%

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 14 235 11788238 185877.98 318 312 63.4
A 0 13 33777 527.69 318 312 63.4
A 8 192 18653 289.21 318 312 63.4
B 0 189 8465911 73095.49 631 617 115.8
B 3 64 140773 1210.21 631 617 115.8
B 15 33 56438 482.0 631 617 115.8
C 14 238 122872 704.54 756 763 173.3
C 15 208 26799 150.22 756 763 173.3
C 2 16 10692 57.29 756 763 173.3
D 7 80 203876 1152.21 754 741 176.3
D 2 250 129782 731.94 754 741 176.3
D 11 176 31655 175.35 754 741 176.3

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