ASTROSAT CZTI

Data Quality Report

Orbit 20220417_A11_097T17_9000005074_level2

Creation date: 2022-04-24T03:50:11.532204
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/AS1A11_097T17_9000005074cztM0_level2_bc.evt modeM0/AS1A11_097T17_9000005074cztM0_level2_quad_clean.evt
Size (bytes)3,403,584,000745,920,000
Size3.2 GB 711.4 MB
Events in quadrant A12,899,9244,767,418
Events in quadrant B43,302,0544,564,995
Events in quadrant C22,143,5084,685,833
Events in quadrant D20,731,7474,531,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01203500
B02302240
C01534170
D01486460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012040
B012040
C012040
D012040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58911610.103546%
B58911825114.005873%
C5890724764.203236%
D5890915912.700776%

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 81083 58925 0 0 0.00% 0.00%
B 81083 58915 422 422 0.52% 0.72%
C 81083 58911 271 271 0.33% 0.46%
D 81083 58908 222 222 0.27% 0.38%

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 10 83 1011463 1510.82 3023 2977 667.5
A 13 6 120242 175.68 3023 2977 667.5
A 13 254 81943 118.3 3023 2977 667.5
B 4 251 26599225 45621.98 2930 2867 583.0
B 5 236 3558418 6099.0 2930 2867 583.0
B 5 172 834949 1427.31 2930 2867 583.0
C 4 254 3993655 5943.21 2926 2902 671.5
C 0 10 2305061 3428.48 2926 2902 671.5
C 15 214 2235851 3325.41 2926 2902 671.5
D 1 52 1665149 2382.99 2956 2865 697.6
D 13 249 1661588 2377.89 2956 2865 697.6
D 12 6 1265481 1810.04 2956 2865 697.6

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