ASTROSAT CZTI

Data Quality Report

Orbit 42935

Creation date: 2024-06-27T22:45:58.404804
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/AS1T05_143T01_9000005830_42935cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42935cztM0_level2_quad_clean.evt
Size (bytes)452,024,64086,564,160
Size431.1 MB 82.6 MB
Events in quadrant A3,304,837644,514
Events in quadrant B6,912,990419,909
Events in quadrant C2,674,092611,092
Events in quadrant D3,407,941557,323

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132022
B0242712
C0113793
D0138882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5553771.386638%
B5553214838.681794%
C555240.072046%
D55521803.242075%

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 7346 5554 55 55 0.75% 0.99%
B 7346 5554 1883 1883 25.63% 33.90%
C 7345 5553 2 2 0.03% 0.04%
D 7345 5553 178 178 2.42% 3.21%

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 613300 4772.61 622 607 128.4
A 15 222 239746 1862.79 622 607 128.4
A 13 248 42482 326.19 622 607 128.4
B 4 81 4826483 50969.39 491 477 94.7
B 5 172 75043 787.52 491 477 94.7
B 4 171 61596 645.5 491 477 94.7
C 15 214 243009 1729.06 602 605 140.2
C 14 254 63187 446.39 602 605 140.2
C 12 249 15522 106.4 602 605 140.2
D 10 118 286775 1946.06 599 581 147.1
D 1 52 197350 1337.99 599 581 147.1
D 12 6 189613 1285.38 599 581 147.1

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