ASTROSAT CZTI

Data Quality Report

Orbit 20200724_A09_113T01_9000003768_level2

Creation date: 2021-01-09T20:05:16.141987
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_113T01_9000003768cztM0_level2_bc.evt modeM0/AS1A09_113T01_9000003768cztM0_level2_quad_clean.evt
Size (bytes)1,346,025,600552,447,360
Size1.3 GB 526.9 MB
Events in quadrant A8,883,5913,523,201
Events in quadrant B8,965,2793,554,880
Events in quadrant C8,283,2713,402,825
Events in quadrant D11,766,4333,370,964

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08600
B08600
C08600
D08600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0872660
B0879200
C0866680
D0957470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A419663940.938855%
B419664471.065148%
C419665361.277224%
D419667281.734738%

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 46916 41965 1 1 0.00% 0.00%
B 46916 41964 0 0 0.00% 0.00%
C 46916 41963 2 2 0.00% 0.00%
D 46916 41963 121 121 0.26% 0.29%

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 0 13 329590 677.4 2208 2168 483.4
A 13 254 68932 138.13 2208 2168 483.4
A 6 16 17213 31.13 2208 2168 483.4
B 15 33 123344 286.32 2215 2161 423.2
B 0 190 101618 234.99 2215 2161 423.2
B 5 172 100055 231.29 2215 2161 423.2
C 3 233 91005 177.62 2105 2098 500.5
C 2 16 40958 77.64 2105 2098 500.5
C 14 225 25531 46.81 2105 2098 500.5
D 1 52 2224789 4344.24 2142 2078 511.6
D 12 233 359880 699.32 2142 2078 511.6
D 7 38 201112 389.01 2142 2078 511.6

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