ASTROSAT CZTI

Data Quality Report

Orbit 17340

Creation date: 2024-06-27T17:35:10.886600
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/AS1A05_169T01_9000002558_17340cztM0_level2.evt modeM0/AS1A05_169T01_9000002558_17340cztM0_level2_quad_clean.evt
Size (bytes)96,154,56030,101,760
Size91.7 MB 28.7 MB
Events in quadrant A673,834212,544
Events in quadrant B685,830214,032
Events in quadrant C705,333196,437
Events in quadrant D746,430181,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08561
B08552
C08751
D08652

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090866191
B091776249
C095796584
D099286798

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01212
B01212
C01212
D01313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144400.000000%
B145410.068776%
C143630.208914%
D1348191.409496%

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 2807 1781 0 0 0.00% 0.00%
B 5224 1748 0 0 0.00% 0.00%
C 2809 1744 1 1 0.04% 0.06%
D 5186 1674 11 11 0.21% 0.66%

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 0 226 1591 38.58 174 172 36.8
A 0 8 1427 34.12 174 172 36.8
A 3 137 1231 28.79 174 172 36.8
B 12 111 3913 107.74 174 171 34.7
B 11 111 3257 88.86 174 171 34.7
B 0 229 3124 85.03 174 171 34.7
C 3 233 48925 1252.58 160 162 38.9
C 14 238 26335 672.31 160 162 38.9
C 7 220 3043 74.0 160 162 38.9
D 5 222 164906 4362.05 150 146 37.8
D 2 152 13903 364.22 150 146 37.8
D 2 234 4177 106.72 150 146 37.8

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