ASTROSAT CZTI

Data Quality Report

Orbit 27549

Creation date: 2024-06-27T19:41:24.923359
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/AS1C05_019T04_9000003956_27549cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27549cztM0_level2_quad_clean.evt
Size (bytes)519,367,680116,161,920
Size495.3 MB 110.8 MB
Events in quadrant A3,250,642773,742
Events in quadrant B3,616,969786,479
Events in quadrant C3,303,953751,695
Events in quadrant D5,084,127720,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142840
B0152200
C0143510
D0198540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6973851.218988%
B69741692.423286%
C6974881.261830%
D69743645.219386%

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 7393 6973 0 0 0.00% 0.00%
B 7394 6974 84 84 1.14% 1.20%
C 7394 6974 1 1 0.01% 0.01%
D 7394 6974 310 310 4.19% 4.45%

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 10130 54.86 843 825 169.6
A 3 137 8110 42.95 843 825 169.6
A 0 226 7196 37.56 843 825 169.6
B 10 245 315147 2007.58 828 806 156.6
B 0 230 23717 146.32 828 806 156.6
B 15 32 19976 122.43 828 806 156.6
C 14 238 132565 702.79 802 804 187.5
C 7 221 15553 78.67 802 804 187.5
C 2 16 13754 69.07 802 804 187.5
D 1 52 1584977 8371.67 802 779 189.2
D 7 80 386413 2037.88 802 779 189.2
D 2 250 67934 354.88 802 779 189.2

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