ASTROSAT CZTI

Data Quality Report

Orbit 13889

Creation date: 2024-06-27T16:47:23.479022
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/AS1A04_010T01_9000002046_13889cztM0_level2.evt modeM0/AS1A04_010T01_9000002046_13889cztM0_level2_quad_clean.evt
Size (bytes)1,444,901,760241,879,680
Size1.3 GB 230.7 MB
Events in quadrant A9,058,3611,524,218
Events in quadrant B9,378,8301,531,096
Events in quadrant C9,173,6991,514,526
Events in quadrant D14,840,6131,422,671

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396095
B0403224
C0396984
D0569454

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193523131.617404%
B193523861.994626%
C193522281.178173%
D1935213156.795163%

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 21558 19354 0 0 0.00% 0.00%
B 21558 19353 35 35 0.16% 0.18%
C 21558 19353 5 5 0.02% 0.03%
D 21558 19353 1032 1032 4.79% 5.33%

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 23 84601 176.47 2314 2260 466.6
A 1 162 39448 79.7 2314 2260 466.6
A 0 226 25963 50.8 2314 2260 466.6
B 4 80 194851 433.67 2296 2233 444.2
B 3 209 59445 128.81 2296 2233 444.2
B 12 111 54878 118.53 2296 2233 444.2
C 3 233 351842 666.45 2250 2258 524.5
C 14 234 24878 43.12 2250 2258 524.5
C 0 207 23773 41.02 2250 2258 524.5
D 1 52 2916881 5569.13 2192 2136 523.4
D 5 222 1846072 3523.16 2192 2136 523.4
D 10 157 831567 1584.77 2192 2136 523.4

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