ASTROSAT CZTI

Data Quality Report

Orbit 06846

Creation date: 2024-06-27T15:12:19.217850
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/AS1A02_174T04_9000000938_06846cztM0_level2.evt modeM0/AS1A02_174T04_9000000938_06846cztM0_level2_quad_clean.evt
Size (bytes)271,903,68032,855,040
Size259.3 MB 31.3 MB
Events in quadrant A1,761,214187,773
Events in quadrant B1,788,624189,854
Events in quadrant C1,787,287188,318
Events in quadrant D2,658,239180,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074340
B075270
C075220
D0104030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A350130.085690%
B350120.057127%
C350130.085690%
D35011494.255927%

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 3501 3501 0 0 0.00% 0.00%
B 3501 3501 0 0 0.00% 0.00%
C 3501 3501 0 0 0.00% 0.00%
D 3501 3501 121 121 3.46% 3.46%

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 8 15 27229 296.49 446 437 90.4
A 3 1 7326 76.24 446 437 90.4
A 15 239 6435 66.38 446 437 90.4
B 0 219 12889 147.62 449 439 84.3
B 4 48 11290 128.66 449 439 84.3
B 15 204 7530 84.08 449 439 84.3
C 3 9 38173 370.98 438 441 101.7
C 9 68 20983 201.97 438 441 101.7
C 9 247 14912 142.28 438 441 101.7
D 8 195 317537 3000.28 432 419 105.7
D 14 34 284407 2686.83 432 419 105.7
D 2 33 203537 1921.71 432 419 105.7

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