ASTROSAT CZTI

Data Quality Report

Orbit 20210604_A10_053T35_9000004438_level2

Creation date: 2021-06-07T16:27:56.562890
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_053T35_9000004438cztM0_level2_bc.evt modeM0/AS1A10_053T35_9000004438cztM0_level2_quad_clean.evt
Size (bytes)2,677,199,040745,012,800
Size2.5 GB 710.5 MB
Events in quadrant A13,328,9754,769,369
Events in quadrant B28,360,1014,782,918
Events in quadrant C12,964,4354,650,503
Events in quadrant D22,670,9304,573,736

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01205030
B01726950
C01208550
D01485060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011220
B011220
C011220
D011220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552399921.795833%
B5524118343.319998%
C5524112702.299017%
D5523921213.839678%

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 69366 55235 32 32 0.05% 0.06%
B 69366 55233 23 23 0.03% 0.04%
C 69366 55236 3 3 0.00% 0.01%
D 69366 55231 484 484 0.70% 0.88%

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 1385252 2113.24 3058 3005 654.1
A 13 254 100912 149.68 3058 3005 654.1
A 15 192 79392 116.78 3058 3005 654.1
B 6 159 14889875 26045.64 3055 2988 571.6
B 5 255 1100304 1919.83 3055 2988 571.6
B 0 190 179762 309.28 3055 2988 571.6
C 3 233 846013 1213.92 2955 2947 694.5
C 0 10 322975 460.81 2955 2947 694.5
C 10 22 197773 280.53 2955 2947 694.5
D 8 195 5647359 8137.48 3010 2926 693.6
D 10 253 2094011 3014.68 3010 2926 693.6
D 12 227 1252562 1801.58 3010 2926 693.6

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