ASTROSAT CZTI

Data Quality Report

Orbit 36270

Creation date: 2022-06-14T09:48:50.630842
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/AS1A10_071T36_9000005182_36270cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36270cztM0_level2_quad_clean.evt
Size (bytes)464,555,52084,300,480
Size443.0 MB 80.4 MB
Events in quadrant A2,701,194557,868
Events in quadrant B4,443,118539,246
Events in quadrant C3,172,850545,608
Events in quadrant D3,374,629521,133

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116453
B0167892
C0128472
D0137562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A556280.143833%
B55624227.587199%
C5562701.258540%
D55621292.319310%

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 7145 5563 1 1 0.01% 0.02%
B 7145 5563 345 345 4.83% 6.20%
C 7145 5563 44 44 0.62% 0.79%
D 7145 5563 115 115 1.61% 2.07%

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 167112 1256.24 650 636 132.5
A 9 143 8438 58.87 650 636 132.5
A 13 254 8166 56.82 650 636 132.5
B 5 172 1325175 10798.46 627 611 122.7
B 5 236 270398 2199.43 627 611 122.7
B 4 171 124020 1006.09 627 611 122.7
C 0 10 238978 1616.83 628 634 147.4
C 15 214 230969 1562.5 628 634 147.4
C 0 207 206381 1395.71 628 634 147.4
D 13 171 282340 1833.61 628 610 153.6
D 12 6 262425 1704.0 628 610 153.6
D 2 153 125326 811.7 628 610 153.6

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