ASTROSAT CZTI

Data Quality Report

Orbit 24261

Creation date: 2024-06-27T19:04:04.475691
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_118T01_9000003586_24261cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24261cztM0_level2_quad_clean.evt
Size (bytes)526,092,480103,824,000
Size501.7 MB 99.0 MB
Events in quadrant A3,355,380673,943
Events in quadrant B3,876,708697,295
Events in quadrant C3,470,276665,295
Events in quadrant D4,776,976641,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140602
B0156792
C0142522
D0187292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6685490.732984%
B66851392.079282%
C6685761.136874%
D66851452.169035%

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 7940 6685 0 0 0.00% 0.00%
B 7940 6685 27 27 0.34% 0.40%
C 7940 6686 0 0 0.00% 0.00%
D 7940 6686 76 76 0.96% 1.14%

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 9740 51.1 871 854 173.9
A 0 226 7418 37.74 871 854 173.9
A 3 137 7132 36.1 871 854 173.9
B 15 33 286771 1745.93 872 853 163.8
B 0 245 88671 536.25 872 853 163.8
B 12 17 70175 423.31 872 853 163.8
C 14 238 133852 669.4 850 859 198.7
C 7 247 14614 69.23 850 859 198.7
C 3 233 7367 32.76 850 859 198.7
D 8 195 509115 2463.45 852 830 206.3
D 7 238 332542 1607.67 852 830 206.3
D 1 52 278670 1346.57 852 830 206.3

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