ASTROSAT CZTI

Data Quality Report

Orbit 27338

Creation date: 2024-06-27T19:39:02.179606
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/AS1T03_255T01_9000003922_27338cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27338cztM0_level2_quad_clean.evt
Size (bytes)547,925,76071,017,920
Size522.5 MB 67.7 MB
Events in quadrant A3,303,231442,913
Events in quadrant B3,499,702443,977
Events in quadrant C5,418,262391,826
Events in quadrant D3,922,157408,114

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138010
B0142370
C0204550
D0158210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6640460.692771%
B6640741.114458%
C664078311.792169%
D66411321.987652%

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 8465 6642 1 1 0.01% 0.02%
B 8465 6642 1 1 0.01% 0.02%
C 8465 6642 493 493 5.82% 7.42%
D 8466 6643 98 98 1.16% 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 13 254 9683 51.59 852 835 171.5
A 3 137 8125 42.51 852 835 171.5
A 13 248 7457 38.61 852 835 171.5
B 7 205 86561 525.71 848 827 163.1
B 10 245 35317 211.49 848 827 163.1
B 12 111 19774 116.18 848 827 163.1
C 8 208 1354382 7398.17 776 779 183.0
C 2 16 910713 4973.28 776 779 183.0
C 14 238 123669 671.66 776 779 183.0
D 1 52 649506 3281.57 808 789 197.7
D 2 250 120849 607.33 808 789 197.7
D 7 96 27514 135.19 808 789 197.7

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