ASTROSAT CZTI

Data Quality Report

Orbit 40551

Creation date: 2024-06-27T22:17:28.607022
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/AS1A12_011T26_9000005548_40551cztM0_level2.fits modeM0/AS1A12_011T26_9000005548_40551cztM0_level2_quad_clean.evt
Size (bytes)113,549,76028,920,960
Size108.3 MB 27.6 MB
Events in quadrant A1,011,747209,078
Events in quadrant B881,617213,649
Events in quadrant C919,731195,441
Events in quadrant D1,240,010120,324

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041741
B038251
C038791
D050021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188230.159405%
B188230.159405%
C188250.265675%
D188275039.851222%

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 1882 1882 1 1 0.05% 0.05%
B 1882 1882 0 0 0.00% 0.00%
C 1882 1882 2 2 0.11% 0.11%
D 1882 1882 22 22 1.17% 1.17%

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 198695 4442.44 208 204 44.7
A 12 189 4849 103.96 208 204 44.7
A 13 254 2331 47.6 208 204 44.7
B 3 112 58482 1393.95 205 199 41.8
B 0 230 7107 165.22 205 199 41.8
B 12 111 4967 114.04 205 199 41.8
C 15 214 84126 1718.59 201 201 48.8
C 9 187 20734 420.47 201 201 48.8
C 14 254 17639 357.09 201 201 48.8
D 12 227 339686 7932.34 165 160 42.8
D 12 191 124027 2893.9 165 160 42.8
D 2 250 47516 1106.38 165 160 42.8

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