ASTROSAT CZTI

Data Quality Report

Orbit 41731

Creation date: 2024-06-27T22:32:11.851217
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_077T11_9000005696_41731cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41731cztM0_level2_quad_clean.evt
Size (bytes)67,884,48015,736,320
Size64.7 MB 15.0 MB
Events in quadrant A717,289107,964
Events in quadrant B441,339113,728
Events in quadrant C744,71789,682
Events in quadrant D534,88494,035

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027701
B018552
C027671
D021881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A920141.521739%
B91950.544070%
C91911912.948857%
D919333.590860%

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 920 920 2 2 0.22% 0.22%
B 919 919 0 0 0.00% 0.00%
C 919 919 115 115 12.51% 12.51%
D 919 919 33 33 3.59% 3.59%

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 154229 6364.47 110 108 24.2
A 15 223 135052 5572.55 110 108 24.2
A 13 254 1653 63.8 110 108 24.2
B 0 183 4551 189.31 110 107 23.5
B 12 111 2838 116.34 110 107 23.5
B 14 111 2592 105.86 110 107 23.5
C 0 10 331226 13499.07 96 96 24.5
C 15 214 37874 1540.08 96 96 24.5
C 14 67 870 31.55 96 96 24.5
D 13 249 96145 3500.07 103 100 27.4
D 2 16 14920 540.07 103 100 27.4
D 12 6 10805 390.11 103 100 27.4

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