ASTROSAT CZTI

Data Quality Report

Orbit 38799

Creation date: 2024-06-27T21:56:35.331472
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_025T11_9000005398_38799cztM0_level2.fits modeM0/AS1A12_025T11_9000005398_38799cztM0_level2_quad_clean.evt
Size (bytes)56,453,76015,428,160
Size53.8 MB 14.7 MB
Events in quadrant A715,78198,771
Events in quadrant B399,725104,053
Events in quadrant C431,923100,188
Events in quadrant D466,23192,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027462
B018731
C019081
D020101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A935333.529412%
B93510.106952%
C93530.320856%
D93510.106952%

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 935 935 34 34 3.64% 3.64%
B 935 935 0 0 0.00% 0.00%
C 935 935 0 0 0.00% 0.00%
D 935 935 1 1 0.11% 0.11%

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 13 248 209000 9526.27 97 95 21.9
A 10 83 119197 5431.17 97 95 21.9
A 7 16 5569 249.62 97 95 21.9
B 0 230 4802 218.15 98 95 21.6
B 5 184 3980 180.05 98 95 21.6
B 12 111 2492 111.09 98 95 21.6
C 15 214 46549 1901.28 95 95 24.4
C 0 10 8155 329.88 95 95 24.4
C 15 208 2141 83.74 95 95 24.4
D 2 16 45484 1790.24 96 93 25.4
D 5 222 17276 677.7 96 93 25.4
D 12 235 15720 616.33 96 93 25.4

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