ASTROSAT CZTI

Data Quality Report

Orbit 41431

Creation date: 2024-06-27T22:28:55.347896
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_035T01_9000005666_41431cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41431cztM0_level2_quad_clean.evt
Size (bytes)286,822,08083,733,120
Size273.5 MB 79.9 MB
Events in quadrant A2,531,998571,646
Events in quadrant B2,388,472588,533
Events in quadrant C2,727,325542,435
Events in quadrant D2,611,199510,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01022016
B01005213
C01071313
D01081123

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4593110.239495%
B4592250.544425%
C45931593.461790%
D4595952.067465%

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 6691 4598 5 5 0.07% 0.11%
B 6691 4598 17 17 0.25% 0.37%
C 6691 4598 147 147 2.20% 3.20%
D 6691 4599 68 68 1.02% 1.48%

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 383525 3460.66 540 531 110.7
A 13 248 39588 352.91 540 531 110.7
A 2 79 18829 165.34 540 531 110.7
B 5 255 204061 1973.72 537 523 103.1
B 0 190 41874 400.98 537 523 103.1
B 4 81 20061 189.46 537 523 103.1
C 0 10 358636 2935.62 525 531 122.0
C 15 214 187107 1529.49 525 531 122.0
C 15 111 132744 1083.84 525 531 122.0
D 13 171 302524 2344.5 531 518 128.8
D 13 249 100730 777.96 531 518 128.8
D 1 47 55922 430.11 531 518 128.8

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