ASTROSAT CZTI

Data Quality Report

Orbit 27983

Creation date: 2024-06-27T19:46:43.921958
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/AS1A10_065T03_9000004040_27983cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27983cztM0_level2_quad_clean.evt
Size (bytes)582,431,040107,254,080
Size555.4 MB 102.3 MB
Events in quadrant A3,636,164718,713
Events in quadrant B3,674,819707,971
Events in quadrant C3,931,205660,561
Events in quadrant D5,910,742661,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150690
B0152700
C0161980
D0225860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71601472.053073%
B71611602.234325%
C71612092.918587%
D71614316.018712%

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 7720 7160 0 0 0.00% 0.00%
B 7721 7161 1 1 0.01% 0.01%
C 7721 7161 34 34 0.44% 0.47%
D 7721 7161 289 289 3.74% 4.04%

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 8 192 10132 48.54 941 923 189.7
A 13 254 9442 44.9 941 923 189.7
A 3 137 9242 43.85 941 923 189.7
B 5 255 30981 170.33 922 899 176.6
B 12 111 22786 123.93 922 899 176.6
B 11 111 20547 111.25 922 899 176.6
C 10 22 313452 1515.22 880 885 206.3
C 14 238 142812 688.01 880 885 206.3
C 3 233 31838 150.05 880 885 206.3
D 1 52 1825631 8668.08 886 866 210.5
D 8 195 472464 2240.21 886 866 210.5
D 7 80 237737 1125.2 886 866 210.5

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