ASTROSAT CZTI

Data Quality Report

Orbit 37750

Creation date: 2024-06-27T21:43:56.208043
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_106T02_9000005344_37750cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37750cztM0_level2_quad_clean.evt
Size (bytes)442,756,80073,258,560
Size422.2 MB 69.9 MB
Events in quadrant A2,862,777472,042
Events in quadrant B2,915,232470,068
Events in quadrant C2,842,971468,041
Events in quadrant D4,430,093438,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115803
B0118902
C0113982
D0166512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5269290.550389%
B52691192.258493%
C5269671.271589%
D52693566.756500%

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 7122 5270 20 20 0.28% 0.38%
B 7122 5270 97 97 1.36% 1.84%
C 7122 5270 63 63 0.88% 1.20%
D 7122 5270 331 331 4.65% 6.28%

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 330720 2667.64 625 615 123.7
A 6 10 78955 633.08 625 615 123.7
A 13 6 19196 150.16 625 615 123.7
B 5 255 294696 2536.49 609 595 115.9
B 0 189 52778 450.06 609 595 115.9
B 5 172 51279 437.13 609 595 115.9
C 15 214 226487 1646.28 600 605 137.2
C 0 10 195246 1418.59 600 605 137.2
C 15 159 45476 327.03 600 605 137.2
D 13 249 1046545 7173.7 596 579 145.8
D 2 249 439310 3009.01 596 579 145.8
D 12 233 218552 1494.95 596 579 145.8

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