ASTROSAT CZTI

Data Quality Report

Orbit 41770

Creation date: 2024-06-27T22:32:40.418470
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_044T19_9000005698_41770cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41770cztM0_level2_quad_clean.evt
Size (bytes)356,895,36095,806,080
Size340.4 MB 91.4 MB
Events in quadrant A3,190,025647,288
Events in quadrant B2,716,018657,999
Events in quadrant C3,523,725597,830
Events in quadrant D3,314,383578,899

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130702
B0122072
C0143352
D0140852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5996110.183456%
B5996110.183456%
C59962904.836558%
D5995761.267723%

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 7309 5997 6 6 0.08% 0.10%
B 7308 5996 5 5 0.07% 0.08%
C 7309 5997 270 270 3.69% 4.50%
D 7308 5996 87 87 1.19% 1.45%

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 592308 4373.4 659 646 135.3
A 15 223 25166 181.25 659 646 135.3
A 2 79 11857 82.87 659 646 135.3
B 0 245 46238 357.6 652 636 127.5
B 3 112 36188 278.79 652 636 127.5
B 0 190 26646 203.97 652 636 127.5
C 0 10 634486 4357.01 618 621 145.5
C 15 214 240649 1649.88 618 621 145.5
C 4 254 210077 1439.74 618 621 145.5
D 2 249 262725 1648.88 636 616 159.0
D 13 249 247285 1551.75 636 616 159.0
D 2 120 97065 606.74 636 616 159.0

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