ASTROSAT CZTI

Data Quality Report

Orbit 13867

Creation date: 2024-06-27T16:47:09.315830
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/AS1A04_115T02_9000002042_13867cztM0_level2.evt modeM0/AS1A04_115T02_9000002042_13867cztM0_level2_quad_clean.evt
Size (bytes)483,834,24087,615,360
Size461.4 MB 83.6 MB
Events in quadrant A4,049,201550,320
Events in quadrant B3,229,695574,783
Events in quadrant C3,038,967562,601
Events in quadrant D3,913,900532,096

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161173
B0133722
C0129382
D0157492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62101482.383253%
B6210921.481481%
C6210430.692432%
D6210841.352657%

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 8771 6212 105 105 1.20% 1.69%
B 8771 6211 11 11 0.13% 0.18%
C 8771 6213 0 0 0.00% 0.00%
D 8771 6212 59 59 0.67% 0.95%

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 0 23 1001128 6375.06 774 758 156.9
A 0 226 68314 430.51 774 758 156.9
A 1 162 8967 52.31 774 758 156.9
B 0 214 119633 804.37 778 761 147.8
B 4 80 60462 403.98 778 761 147.8
B 12 111 17694 114.58 778 761 147.8
C 3 233 90483 509.24 756 761 176.2
C 13 61 5389 26.26 756 761 176.2
C 3 202 1705 5.36 756 761 176.2
D 10 157 753763 4258.21 745 729 176.8
D 5 222 125244 704.1 745 729 176.8
D 5 223 45458 252.93 745 729 176.8

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