ASTROSAT CZTI

Data Quality Report

Orbit 36840

Creation date: 2024-06-27T21:32:14.595549
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/AS1A11_075T01_9000005244_36840cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36840cztM0_level2_quad_clean.evt
Size (bytes)551,183,04093,248,640
Size525.6 MB 88.9 MB
Events in quadrant A2,619,576627,361
Events in quadrant B6,299,731618,147
Events in quadrant C3,008,731643,101
Events in quadrant D4,417,462575,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110043
B0222622
C0119272
D0165452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5131100.194894%
B51314909.549795%
C5131671.305788%
D51314989.705710%

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 9228 5133 8 8 0.09% 0.16%
B 9228 5133 413 413 4.48% 8.05%
C 9228 5133 55 55 0.60% 1.07%
D 9228 5133 509 509 5.52% 9.92%

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 216746 1767.29 608 597 122.3
A 9 143 28670 229.53 608 597 122.3
A 13 6 15372 120.8 608 597 122.3
B 12 1 3387627 29997.12 601 587 112.9
B 5 255 139036 1226.17 601 587 112.9
B 5 172 127958 1128.05 601 587 112.9
C 0 10 335635 2424.54 602 608 138.2
C 15 214 235096 1696.95 602 608 138.2
C 14 254 81508 585.46 602 608 138.2
D 12 17 1161692 8304.13 575 560 139.8
D 12 233 212716 1517.29 575 560 139.8
D 12 217 211307 1507.21 575 560 139.8

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