ASTROSAT CZTI

Data Quality Report

Orbit 23724

Creation date: 2024-06-27T18:57:58.281184
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/AS1A07_027T06_9000003508_23724cztM0_level2.evt modeM0/AS1A07_027T06_9000003508_23724cztM0_level2_quad_clean.evt
Size (bytes)540,296,64084,640,320
Size515.3 MB 80.7 MB
Events in quadrant A3,205,454546,000
Events in quadrant B4,492,676555,526
Events in quadrant C3,448,065535,811
Events in quadrant D4,796,193492,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131242
B0172342
C0138762
D0184574

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6206330.531743%
B62064387.057686%
C62061352.175314%
D62052974.786463%

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 7536 6206 0 0 0.00% 0.00%
B 7536 6206 292 292 3.87% 4.71%
C 7536 6207 27 27 0.36% 0.43%
D 7535 6205 245 245 3.25% 3.95%

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 11679 65.47 831 815 165.9
A 0 226 7209 38.53 831 815 165.9
A 3 137 6766 35.86 831 815 165.9
B 3 64 804316 5229.87 818 800 153.6
B 0 229 258982 1680.44 818 800 153.6
B 15 33 110004 710.78 818 800 153.6
C 10 9 167155 895.31 803 812 185.8
C 14 238 129598 693.16 803 812 185.8
C 7 247 15726 80.27 803 812 185.8
D 1 52 1506084 7812.91 788 764 192.7
D 13 174 135906 701.41 788 764 192.7
D 7 238 120970 623.89 788 764 192.7

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