ASTROSAT CZTI

Data Quality Report

Orbit 40734

Creation date: 2024-06-27T22:19:46.207704
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/AS1A12_066T01_9000005562_40734cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40734cztM0_level2_quad_clean.evt
Size (bytes)552,026,88082,028,160
Size526.5 MB 78.2 MB
Events in quadrant A3,795,963622,165
Events in quadrant B2,485,382655,063
Events in quadrant C9,014,368378,688
Events in quadrant D4,739,545468,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145533
B0106552
C0303622
D0175332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51322013.916602%
B5132150.292284%
C5132236846.141855%
D5132116122.622759%

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 7075 5133 195 195 2.76% 3.80%
B 7075 5133 1 1 0.01% 0.02%
C 7075 5133 2256 2256 31.89% 43.95%
D 7075 5133 561 561 7.93% 10.93%

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 13 248 972608 8024.63 598 586 121.1
A 10 83 480692 3963.57 598 586 121.1
A 12 189 21099 169.35 598 586 121.1
B 0 229 36253 307.07 605 588 116.1
B 0 190 33732 285.37 605 588 116.1
B 4 170 17283 143.74 605 588 116.1
C 9 187 6863093 61487.97 480 483 111.6
C 15 214 180675 1614.49 480 483 111.6
C 14 254 46783 414.84 480 483 111.6
D 12 227 1018278 7753.37 533 519 131.3
D 1 47 797160 6068.88 533 519 131.3
D 2 249 353985 2692.73 533 519 131.3

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