ASTROSAT CZTI

Data Quality Report

Orbit 28495

Creation date: 2024-06-27T19:52:36.630719
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/AS1A10_123T03_9000004096_28495cztM0_level2.evt modeM0/AS1A10_123T03_9000004096_28495cztM0_level2_quad_clean.evt
Size (bytes)1,460,027,520213,068,160
Size1.4 GB 203.2 MB
Events in quadrant A8,207,4761,351,621
Events in quadrant B8,440,0721,380,515
Events in quadrant C8,503,9351,329,330
Events in quadrant D17,881,4971,182,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357073
B0360953
C0363303
D0650183

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175342001.140641%
B175342271.294628%
C175332841.619803%
D17533306817.498432%

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 19314 17534 0 0 0.00% 0.00%
B 19314 17534 11 11 0.06% 0.06%
C 19313 17533 4 4 0.02% 0.02%
D 19313 17533 2185 2185 11.31% 12.46%

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 13 254 25232 54.34 2121 2070 426.2
A 3 137 21629 45.89 2121 2070 426.2
A 0 226 17983 37.34 2121 2070 426.2
B 0 230 81830 195.98 2100 2039 407.1
B 14 207 78591 188.02 2100 2039 407.1
B 12 111 51746 122.09 2100 2039 407.1
C 14 238 325538 679.12 2036 2046 476.3
C 7 247 132643 274.17 2036 2046 476.3
C 3 233 89988 184.62 2036 2046 476.3
D 1 52 7055160 15634.58 1885 1834 451.1
D 8 195 3083909 6831.81 1885 1834 451.1
D 12 233 208997 459.2 1885 1834 451.1

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