ASTROSAT CZTI

Data Quality Report

Orbit 16185

Creation date: 2024-06-27T17:19:05.185243
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/AS1T02_109T01_9000002386_16185cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16185cztM0_level2_quad_clean.evt
Size (bytes)526,046,40075,568,320
Size501.7 MB 72.1 MB
Events in quadrant A4,392,266447,563
Events in quadrant B3,502,305469,572
Events in quadrant C3,768,702451,351
Events in quadrant D3,806,894445,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174223
B0146072
C0154412
D0158652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68072834.157485%
B6807660.969590%
C68071061.557221%
D6807670.984281%

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 7578 6809 186 186 2.45% 2.73%
B 7578 6809 0 0 0.00% 0.00%
C 7578 6809 1 1 0.01% 0.01%
D 7578 6809 10 10 0.13% 0.15%

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 968076 5689.57 840 822 170.0
A 8 247 191236 1120.05 840 822 170.0
A 0 226 7439 38.92 840 822 170.0
B 4 216 57462 346.9 849 829 163.3
B 3 64 29215 173.87 849 829 163.3
B 0 219 26206 155.44 849 829 163.3
C 3 233 283039 1481.04 813 818 190.6
C 7 247 167700 875.76 813 818 190.6
C 14 238 125918 656.5 813 818 190.6
D 15 0 293946 1437.66 831 808 203.9
D 1 52 247929 1211.97 831 808 203.9
D 10 70 55042 265.98 831 808 203.9

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