ASTROSAT CZTI

Data Quality Report

Orbit 42066

Creation date: 2024-06-27T22:36:25.219591
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/AS1A12_037T03_9000005738_42066cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42066cztM0_level2_quad_clean.evt
Size (bytes)330,183,36087,814,080
Size314.9 MB 83.7 MB
Events in quadrant A3,267,039589,393
Events in quadrant B2,390,390611,302
Events in quadrant C2,452,920578,084
Events in quadrant D3,698,035508,276

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129892
B0108132
C0106902
D0148382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5312310.583584%
B531290.169428%
C531230.056476%
D53123085.798193%

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 7135 5313 15 15 0.21% 0.28%
B 7135 5313 5 5 0.07% 0.09%
C 7135 5313 0 0 0.00% 0.00%
D 7135 5313 249 249 3.49% 4.69%

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 558188 4669.53 585 575 119.4
A 15 222 255806 2137.34 585 575 119.4
A 15 223 146204 1219.52 585 575 119.4
B 3 112 70247 610.22 586 570 114.2
B 12 111 14425 121.34 586 570 114.2
B 11 111 13055 109.34 586 570 114.2
C 15 214 219193 1617.44 571 575 135.2
C 15 111 4941 32.3 571 575 135.2
C 13 61 3780 23.71 571 575 135.2
D 1 52 903978 6552.5 555 538 137.9
D 13 249 209219 1513.53 555 538 137.9
D 12 218 172239 1245.32 555 538 137.9

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