ASTROSAT CZTI

Data Quality Report

Orbit 20240327_A13_071T06_9000006146_level2

Creation date: 2024-03-30T15:23:42.892449
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/AS1A13_071T06_9000006146cztM0_level2.fits modeM0/AS1A13_071T06_9000006146cztM0_level2_quad_clean.evt
Size (bytes)815,489,280799,171,200
Size777.7 MB 762.1 MB
Events in quadrant A4,906,7685,053,361
Events in quadrant B4,162,2143,552,308
Events in quadrant C4,985,5504,940,918
Events in quadrant D4,050,0424,080,076

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03108450
B04862140
C02021080
D03416780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019500
B019480
C019500
D019460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01250
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9587228823.006091%
B958743013031.426664%
C959229120.950773%
D9589484728.834755%

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 108844 95946 0 0 0.00% 0.00%
B 108834 95626 0 0 0.00% 0.00%
C 108915 96010 0 0 0.00% 0.00%
D 108886 95946 0 0 0.00% 0.00%

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 7 110 3972 8.46 1277 1194 328.3
A 15 236 3939 8.36 1277 1194 328.3
A 0 29 3868 8.14 1277 1194 328.3
B 2 9 3794 12.52 1099 1044 219.7
B 2 8 3103 9.37 1099 1044 219.7
B 3 17 2909 8.49 1099 1044 219.7
C 1 81 3840 7.66 1318 1224 341.6
C 1 80 3814 7.58 1318 1224 341.6
C 3 202 3812 7.58 1318 1224 341.6
D 4 16 2995 5.96 1165 1054 325.9
D 10 189 2963 5.86 1165 1054 325.9
D 6 38 2925 5.74 1165 1054 325.9

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