ASTROSAT CZTI

Data Quality Report

Orbit 25513

Creation date: 2024-06-27T19:18:30.650226
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/AS1A07_147T01_9000003722_25513cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25513cztM0_level2_quad_clean.evt
Size (bytes)1,223,775,360237,006,720
Size1.1 GB 226.0 MB
Events in quadrant A8,610,7111,517,779
Events in quadrant B8,825,5581,529,048
Events in quadrant C8,681,7081,453,717
Events in quadrant D9,701,9521,412,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377070
B0380210
C0377310
D0412640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183651200.653417%
B183661410.767723%
C183662111.148862%
D183664902.667973%

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 20390 18368 0 0 0.00% 0.00%
B 20391 18369 1 1 0.00% 0.01%
C 20391 18369 0 0 0.00% 0.00%
D 20391 18369 313 313 1.53% 1.70%

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 28966 59.95 2231 2181 446.8
A 3 137 21326 42.85 2231 2181 446.8
A 0 226 18713 37.0 2231 2181 446.8
B 0 190 97626 224.45 2215 2158 425.3
B 12 111 52831 119.13 2215 2158 425.3
B 11 111 47998 107.77 2215 2158 425.3
C 14 238 336182 669.65 2134 2150 498.8
C 3 233 18871 33.52 2134 2150 498.8
C 13 61 14653 25.06 2134 2150 498.8
D 12 233 1157000 2227.89 2145 2084 518.4
D 8 195 269649 516.15 2145 2084 518.4
D 2 234 80803 151.85 2145 2084 518.4

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