ASTROSAT CZTI

Data Quality Report

Orbit 34974

Creation date: 2024-06-27T21:07:38.716830
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/AS1A11_047T09_9000005010_34974cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34974cztM0_level2_quad_clean.evt
Size (bytes)144,141,12022,475,520
Size137.5 MB 21.4 MB
Events in quadrant A584,910164,987
Events in quadrant B630,947167,054
Events in quadrant C703,671160,599
Events in quadrant D2,363,46098,311

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024741
B025981
C027451
D078261

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117120.170794%
B1171191.622545%
C1171322.732707%
D117165555.935098%

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 1171 1171 1 1 0.09% 0.09%
B 1171 1171 15 15 1.28% 1.28%
C 1171 1171 29 29 2.48% 2.48%
D 1171 1171 647 647 55.25% 55.25%

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 30139 1003.98 140 137 29.9
A 13 6 6785 222.47 140 137 29.9
A 9 143 5686 185.69 140 137 29.9
B 5 172 69404 2434.04 140 137 28.5
B 15 85 7590 261.9 140 137 28.5
B 12 111 3167 106.47 140 137 28.5
C 0 10 105128 3115.36 135 136 33.7
C 15 214 51753 1531.6 135 136 33.7
C 15 159 14653 430.75 135 136 33.7
D 13 174 910583 36686.79 94 91 24.8
D 8 195 366071 14746.57 94 91 24.8
D 1 52 336338 13548.53 94 91 24.8

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