ASTROSAT CZTI

Data Quality Report

Orbit 18221

Creation date: 2024-06-27T17:46:56.658418
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/AS1C04_009T03_9000002714_18221cztM0_level2.evt modeM0/AS1C04_009T03_9000002714_18221cztM0_level2_quad_clean.evt
Size (bytes)422,006,400129,435,840
Size402.5 MB 123.4 MB
Events in quadrant A3,063,229883,538
Events in quadrant B3,149,649898,229
Events in quadrant C3,033,994854,387
Events in quadrant D3,097,223836,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133642
B0135282
C0132432
D0136592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6409420.655328%
B6409550.858168%
C6409460.717741%
D6409360.561710%

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 7629 6410 7 7 0.09% 0.11%
B 7629 6410 15 15 0.20% 0.23%
C 7629 6410 0 0 0.00% 0.00%
D 7629 6410 15 15 0.20% 0.23%

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 15 174 51038 323.5 780 762 155.4
A 8 34 7977 46.43 780 762 155.4
A 0 226 6808 38.9 780 762 155.4
B 7 220 54162 366.28 781 763 145.8
B 12 111 16684 109.21 781 763 145.8
B 11 111 14637 95.17 781 763 145.8
C 14 238 117384 680.45 745 751 171.4
C 0 207 9739 52.44 745 751 171.4
C 13 61 5170 25.78 745 751 171.4
D 7 238 131111 722.47 751 729 180.5
D 1 52 47341 258.28 751 729 180.5
D 2 234 26043 140.27 751 729 180.5

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