ASTROSAT CZTI

Data Quality Report

Orbit 18973

Creation date: 2024-06-27T17:57:18.429553
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/AS1A05_166T04_9000002826_18973cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18973cztM0_level2_quad_clean.evt
Size (bytes)262,546,56047,986,560
Size250.4 MB 45.8 MB
Events in quadrant A1,826,803298,919
Events in quadrant B1,961,301310,363
Events in quadrant C1,891,178299,237
Events in quadrant D2,023,839287,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076411
B080581
C077581
D083801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3631170.468191%
B3631521.432112%
C3631340.936381%
D3631230.633434%

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 4786 3632 0 0 0.00% 0.00%
B 4786 3632 13 13 0.27% 0.36%
C 4786 3632 0 0 0.00% 0.00%
D 4786 3632 5 5 0.10% 0.14%

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 11 29 11215 110.68 472 461 97.2
A 0 226 4190 38.38 472 461 97.2
A 3 137 3711 33.45 472 461 97.2
B 7 220 77803 841.65 471 459 91.9
B 3 112 25108 268.23 471 459 91.9
B 12 111 10399 108.17 471 459 91.9
C 14 238 71835 660.48 458 462 108.1
C 6 96 16197 145.61 458 462 108.1
C 7 220 5646 47.97 458 462 108.1
D 7 238 246557 2169.8 460 446 113.4
D 1 52 21861 188.8 460 446 113.4
D 2 234 18382 158.13 460 446 113.4

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