ASTROSAT CZTI

Data Quality Report

Orbit 24257

Creation date: 2024-06-27T19:04:01.421176
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_24257cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24257cztM0_level2_quad_clean.evt
Size (bytes)563,120,64092,525,760
Size537.0 MB 88.2 MB
Events in quadrant A3,309,980602,415
Events in quadrant B3,353,277621,319
Events in quadrant C3,340,332593,859
Events in quadrant D6,621,146542,090

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139582
B0141002
C0139332
D0239942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6340701.104101%
B6339540.851869%
C6339771.214703%
D6339104316.453699%

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 7525 6340 32 32 0.43% 0.50%
B 7524 6339 7 7 0.09% 0.11%
C 7524 6339 1 1 0.01% 0.02%
D 7524 6339 674 674 8.96% 10.63%

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 103864 619.12 831 816 166.4
A 13 254 10179 56.25 831 816 166.4
A 0 226 7072 37.59 831 816 166.4
B 0 229 41545 258.48 837 816 157.6
B 12 111 18374 111.43 837 816 157.6
B 0 190 16379 98.77 837 816 157.6
C 14 238 129587 681.57 810 821 188.9
C 7 247 23243 118.68 810 821 188.9
C 2 16 20199 102.57 810 821 188.9
D 1 52 2489655 13964.66 739 719 178.2
D 8 195 810904 4545.7 739 719 178.2
D 7 238 412157 2308.45 739 719 178.2

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