ASTROSAT CZTI

Data Quality Report

Orbit 16080

Creation date: 2024-06-27T17:17:38.924126
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_230T01_9000002374_16080cztM0_level2.evt modeM0/AS1A04_230T01_9000002374_16080cztM0_level2_quad_clean.evt
Size (bytes)478,569,600102,720,960
Size456.4 MB 98.0 MB
Events in quadrant A3,232,618707,730
Events in quadrant B3,482,199701,814
Events in quadrant C3,229,383653,547
Events in quadrant D4,138,671625,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133752
B0141501
C0132631
D0160711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60501282.115702%
B60501081.785124%
C60501011.669421%
D60504357.190083%

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 7321 6051 29 29 0.40% 0.48%
B 7321 6051 22 22 0.30% 0.36%
C 7321 6051 4 4 0.05% 0.07%
D 7321 6051 291 291 3.97% 4.81%

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 96 115208 717.38 791 776 159.5
A 15 174 27474 167.37 791 776 159.5
A 15 239 27295 166.25 791 776 159.5
B 7 220 166476 1142.22 781 763 145.1
B 0 190 90039 615.36 781 763 145.1
B 0 189 43487 294.49 781 763 145.1
C 0 207 169477 986.12 742 749 171.1
C 14 238 113563 659.34 742 749 171.1
C 7 247 23328 131.96 742 749 171.1
D 12 218 756564 4172.41 746 724 181.2
D 1 52 336830 1855.38 746 724 181.2
D 5 222 114389 627.46 746 724 181.2

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