ASTROSAT CZTI

Data Quality Report

Orbit 40758

Creation date: 2024-06-27T22:20:05.775608
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/AS1C07_001T10_9000005566_40758cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40758cztM0_level2_quad_clean.evt
Size (bytes)573,448,320102,265,920
Size546.9 MB 97.5 MB
Events in quadrant A3,705,058757,224
Events in quadrant B3,248,041776,029
Events in quadrant C9,795,191517,391
Events in quadrant D3,939,237562,600

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152623
B0143362
C0338522
D0165292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6930200.288600%
B6930250.360750%
C6930234833.881674%
D6930142020.490620%

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 9708 6932 5 5 0.05% 0.07%
B 9708 6932 11 11 0.11% 0.16%
C 9708 6932 2205 2205 22.71% 31.81%
D 9708 6932 142 142 1.46% 2.05%

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 10 83 601802 3831.32 768 750 156.9
A 6 10 65616 413.48 768 750 156.9
A 12 189 59026 371.47 768 750 156.9
B 0 229 124335 832.95 764 742 148.4
B 4 171 61546 409.79 764 742 148.4
B 0 190 35887 236.86 764 742 148.4
C 9 187 6954027 46855.7 642 646 148.4
C 15 214 253755 1705.59 642 646 148.4
C 0 10 42983 285.29 642 646 148.4
D 2 249 669718 4072.33 665 646 164.3
D 12 191 289880 1760.43 665 646 164.3
D 2 250 187257 1135.81 665 646 164.3

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