ASTROSAT CZTI

Data Quality Report

Orbit 28655

Creation date: 2024-06-27T19:54:31.796848
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_073T08_9000004112_28655cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28655cztM0_level2_quad_clean.evt
Size (bytes)571,184,64094,584,960
Size544.7 MB 90.2 MB
Events in quadrant A3,648,265608,847
Events in quadrant B4,714,663605,963
Events in quadrant C3,744,371582,261
Events in quadrant D4,698,273561,100

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154206
B0187512
C0155602
D0188282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7271380.522624%
B72722112.901540%
C72722753.781628%
D72722623.602860%

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 9051 7273 5 5 0.06% 0.07%
B 9052 7274 68 68 0.75% 0.93%
C 9052 7274 19 19 0.21% 0.26%
D 9052 7274 204 204 2.25% 2.80%

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 15 174 97961 533.07 901 884 182.1
A 14 238 32613 174.23 901 884 182.1
A 12 16 25522 135.29 901 884 182.1
B 10 245 1187217 6937.22 888 865 171.0
B 12 111 20869 116.97 888 865 171.0
B 11 111 18965 105.84 888 865 171.0
C 14 238 206434 1025.72 854 861 200.4
C 14 254 107082 529.99 854 861 200.4
C 14 128 98390 486.63 854 861 200.4
D 1 52 1060385 5157.09 853 832 205.5
D 8 195 308331 1496.67 853 832 205.5
D 13 104 41291 196.92 853 832 205.5

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