ASTROSAT CZTI

Data Quality Report

Orbit 24649

Creation date: 2024-06-27T19:08:20.819992
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/AS1T03_191T01_9000003618_24649cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24649cztM0_level2_quad_clean.evt
Size (bytes)528,439,680141,791,040
Size504.0 MB 135.2 MB
Events in quadrant A3,354,6181,000,426
Events in quadrant B3,507,515997,767
Events in quadrant C5,247,763912,360
Events in quadrant D3,467,183944,711

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140051
B0143921
C0198591
D0143451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6290731.160572%
B62901021.621622%
C62904086.486486%
D6291610.969639%

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 7560 6290 3 3 0.04% 0.05%
B 7560 6291 33 33 0.44% 0.52%
C 7560 6290 149 149 1.97% 2.37%
D 7561 6291 6 6 0.08% 0.10%

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 6 16 38735 226.46 856 842 167.3
A 10 255 16042 90.84 856 842 167.3
A 13 254 10126 55.48 856 842 167.3
B 5 172 178927 1154.01 832 815 154.3
B 0 189 35053 221.83 832 815 154.3
B 0 190 24780 155.27 832 815 154.3
C 7 247 1560315 8691.38 786 794 179.4
C 10 9 310063 1723.59 786 794 179.4
C 14 238 129790 718.91 786 794 179.4
D 8 195 207093 1044.6 830 809 197.5
D 12 235 38442 190.57 830 809 197.5
D 9 1 28197 138.69 830 809 197.5

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