ASTROSAT CZTI

Data Quality Report

Orbit 41690

Creation date: 2024-06-27T22:31:38.022000
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_035T02_9000005690_41690cztM0_level2.fits modeM0/AS1A12_035T02_9000005690_41690cztM0_level2_quad_clean.evt
Size (bytes)83,615,04020,980,800
Size79.7 MB 20.0 MB
Events in quadrant A717,270145,254
Events in quadrant B712,523146,074
Events in quadrant C753,117132,400
Events in quadrant D822,898127,295

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028472
B027791
C028421
D031461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111150.450045%
B1111464.140414%
C1111716.390639%
D1111625.580558%

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 1111 1111 2 2 0.18% 0.18%
B 1111 1111 38 38 3.42% 3.42%
C 1111 1111 70 70 6.30% 6.30%
D 1111 1111 59 59 5.31% 5.31%

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 171810 5659.44 140 137 30.3
A 13 248 2882 90.49 140 137 30.3
A 13 254 1529 45.89 140 137 30.3
B 0 245 147059 5313.83 134 131 27.7
B 5 255 21292 765.31 134 131 27.7
B 4 141 6791 240.87 134 131 27.7
C 0 10 204462 6648.5 128 128 30.7
C 15 214 48375 1569.83 128 128 30.7
C 14 254 1008 28.63 128 128 30.7
D 2 249 225006 6683.81 133 129 33.6
D 13 249 78423 2327.06 133 129 33.6
D 2 234 4457 128.64 133 129 33.6

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