ASTROSAT CZTI

Data Quality Report

Orbit 41315

Creation date: 2024-06-27T22:27:25.249932
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_025T14_9000005646_41315cztM0_level2.fits modeM0/AS1A12_025T14_9000005646_41315cztM0_level2_quad_clean.evt
Size (bytes)330,223,68087,488,640
Size314.9 MB 83.4 MB
Events in quadrant A2,808,116601,826
Events in quadrant B2,792,946625,328
Events in quadrant C3,299,561546,734
Events in quadrant D2,936,787527,000

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112823
B0112882
C0125262
D0121612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496070.141129%
B4960160.322581%
C49603056.149194%
D4960901.814516%

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 9025 4962 4 4 0.04% 0.08%
B 9025 4962 6 6 0.07% 0.12%
C 9025 4962 306 306 3.39% 6.17%
D 9025 4962 84 84 0.93% 1.69%

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 481126 3988.84 589 578 120.5
A 12 189 25575 207.49 589 578 120.5
A 13 6 15103 120.57 589 578 120.5
B 5 255 421924 3695.51 589 575 114.0
B 0 229 42194 365.03 589 575 114.0
B 12 111 14365 120.95 589 575 114.0
C 0 10 961178 7486.39 545 550 128.3
C 15 214 206801 1607.36 545 550 128.3
C 15 159 5221 36.4 545 550 128.3
D 2 249 267135 1925.77 562 548 138.4
D 5 222 260740 1879.57 562 548 138.4
D 2 120 138801 998.71 562 548 138.4

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