ASTROSAT CZTI

Data Quality Report

Orbit 25484

Creation date: 2024-06-27T19:18:11.190771
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/AS1C05_012T07_9000003718_25484cztM0_level2.evt modeM0/AS1C05_012T07_9000003718_25484cztM0_level2_quad_clean.evt
Size (bytes)1,316,661,120336,081,600
Size1.2 GB 320.5 MB
Events in quadrant A8,172,5882,282,088
Events in quadrant B8,472,3202,297,527
Events in quadrant C8,316,8492,222,644
Events in quadrant D13,696,7612,136,928

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366060
B0372890
C0367010
D0532610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18003660.366606%
B180041170.649856%
C180041841.021995%
D180046553.638080%

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 20028 18006 0 0 0.00% 0.00%
B 20029 18007 2 2 0.01% 0.01%
C 20029 18007 0 0 0.00% 0.00%
D 20029 18007 359 359 1.79% 1.99%

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 13 254 29275 64.56 2114 2066 421.5
A 3 137 19134 40.5 2114 2066 421.5
A 0 226 18173 38.22 2114 2066 421.5
B 0 229 88651 218.51 2104 2046 396.3
B 0 190 79961 196.59 2104 2046 396.3
B 12 111 48329 116.78 2104 2046 396.3
C 14 238 324353 682.59 2039 2051 472.2
C 3 233 25120 48.86 2039 2051 472.2
C 2 16 22797 43.94 2039 2051 472.2
D 8 195 2807973 5725.33 2039 1981 490.1
D 1 52 2522995 5143.86 2039 1981 490.1
D 2 244 398075 808.19 2039 1981 490.1

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