ASTROSAT CZTI

Data Quality Report

Orbit 41342

Creation date: 2024-06-27T22:27:52.971126
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_105T01_9000005658_41342cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41342cztM0_level2_quad_clean.evt
Size (bytes)405,319,68090,057,600
Size386.5 MB 85.9 MB
Events in quadrant A2,808,825634,217
Events in quadrant B2,588,190653,343
Events in quadrant C3,103,217593,331
Events in quadrant D6,088,465473,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116033
B0113412
C0125342
D0217652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A532990.168887%
B5329240.450366%
C53292384.466129%
D5329105319.759805%

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 8974 5331 4 4 0.04% 0.08%
B 8974 5331 13 13 0.14% 0.24%
C 8974 5331 231 231 2.57% 4.33%
D 8974 5331 1087 1087 12.11% 20.39%

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 496706 4036.08 594 581 122.9
A 13 6 12169 94.27 594 581 122.9
A 3 137 6703 49.8 594 581 122.9
B 5 255 145714 1254.16 594 577 115.7
B 0 190 86024 738.37 594 577 115.7
B 12 111 14464 120.0 594 577 115.7
C 0 10 632499 4785.24 564 569 132.1
C 15 214 220968 1668.96 564 569 132.1
C 15 111 22875 168.91 564 569 132.1
D 12 217 1677740 12934.77 524 511 129.7
D 13 249 1218895 9396.16 524 511 129.7
D 1 52 852546 6570.88 524 511 129.7

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