ASTROSAT CZTI

Data Quality Report

Orbit 39896

Creation date: 2024-06-27T22:10:04.372208
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_037T07_9000005504_39896cztM0_level2.fits modeM0/AS1A12_037T07_9000005504_39896cztM0_level2_quad_clean.evt
Size (bytes)295,894,08088,462,080
Size282.2 MB 84.4 MB
Events in quadrant A2,792,730608,818
Events in quadrant B2,503,270617,517
Events in quadrant C2,573,886577,829
Events in quadrant D2,709,912538,675

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110773
B0101872
C0102982
D0110122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4788150.313283%
B4788110.229741%
C4788180.375940%
D4788470.981621%

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 6912 4789 8 8 0.12% 0.17%
B 6912 4789 3 3 0.04% 0.06%
C 6912 4789 13 13 0.19% 0.27%
D 6912 4789 40 40 0.58% 0.84%

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 440441 3745.02 585 574 117.5
A 13 248 23194 192.59 585 574 117.5
A 6 10 21762 180.39 585 574 117.5
B 0 230 85725 765.32 575 561 111.3
B 0 229 42645 378.19 575 561 111.3
B 5 255 28274 249.04 575 561 111.3
C 15 214 204070 1548.11 561 565 131.5
C 14 254 135312 1025.05 561 565 131.5
C 0 10 29876 222.98 561 565 131.5
D 13 249 140174 992.99 569 553 140.6
D 2 249 127543 903.15 569 553 140.6
D 12 227 89007 629.09 569 553 140.6

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