ASTROSAT CZTI

Data Quality Report

Orbit 15122

Creation date: 2024-06-27T17:04:03.646535
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/AS1G08_046T09_9000002226_15122cztM0_level2.evt modeM0/AS1G08_046T09_9000002226_15122cztM0_level2_quad_clean.evt
Size (bytes)486,792,00093,769,920
Size464.2 MB 89.4 MB
Events in quadrant A3,138,980619,518
Events in quadrant B3,223,693630,480
Events in quadrant C5,020,196564,758
Events in quadrant D2,935,542588,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135143
B0136942
C0189572
D0131962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6247110.176085%
B6247540.864415%
C624774011.845686%
D6247170.272131%

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 7488 6249 0 0 0.00% 0.00%
B 7488 6249 23 23 0.31% 0.37%
C 7488 6248 506 506 6.76% 8.10%
D 7488 6249 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 12 189 223381 1465.06 754 739 152.0
A 8 6 8591 51.67 754 739 152.0
A 9 143 7869 46.92 754 739 152.0
B 3 64 87905 619.81 761 743 140.6
B 10 245 78631 553.86 761 743 140.6
B 0 190 22124 152.04 761 743 140.6
C 4 254 1650588 10448.74 689 695 157.9
C 3 233 651435 4121.12 689 695 157.9
C 0 207 16676 101.21 689 695 157.9
D 1 255 29954 162.88 738 718 179.5
D 7 38 26813 145.38 738 718 179.5
D 13 243 23655 127.79 738 718 179.5

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