ASTROSAT CZTI

Data Quality Report

Orbit 25151

Creation date: 2024-06-27T19:14:36.850565
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_018T09_9000003682_25151cztM0_level2.evt modeM0/AS1A07_018T09_9000003682_25151cztM0_level2_quad_clean.evt
Size (bytes)1,435,129,920227,240,640
Size1.3 GB 216.7 MB
Events in quadrant A8,583,9811,429,788
Events in quadrant B8,908,6171,453,864
Events in quadrant C11,599,9121,382,717
Events in quadrant D13,125,4291,344,624

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374190
B0381320
C0475650
D0507820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184521340.726209%
B184521780.964665%
C184522991.620421%
D1845210085.462822%

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 20432 18452 0 0 0.00% 0.00%
B 20432 18452 15 15 0.07% 0.08%
C 20432 18452 1 1 0.00% 0.01%
D 20432 18452 845 845 4.14% 4.58%

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 28588 59.15 2225 2173 446.6
A 3 137 21004 42.16 2225 2173 446.6
A 0 226 18653 36.9 2225 2173 446.6
B 0 229 127805 295.78 2209 2150 424.8
B 3 64 95463 219.65 2209 2150 424.8
B 12 111 53625 121.17 2209 2150 424.8
C 7 247 2905777 5852.63 2124 2137 496.1
C 14 238 336037 673.01 2124 2137 496.1
C 3 233 47250 90.93 2124 2137 496.1
D 1 52 4011969 7801.96 2112 2050 514.0
D 8 195 572088 1109.1 2112 2050 514.0
D 2 244 367568 711.18 2112 2050 514.0

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