ASTROSAT CZTI

Data Quality Report

Orbit 26912

Creation date: 2024-06-27T19:34:25.524651
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/AS1A09_038T18_9000003890_26912cztM0_level2.evt modeM0/AS1A09_038T18_9000003890_26912cztM0_level2_quad_clean.evt
Size (bytes)400,334,40062,616,960
Size381.8 MB 59.7 MB
Events in quadrant A1,994,940432,618
Events in quadrant B5,538,397331,924
Events in quadrant C1,725,987443,405
Events in quadrant D2,611,859424,775

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083460
B0189180
C074570
D0102220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3710752.021563%
B3711190551.333872%
C3711110.296416%
D37111163.125842%

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 3710 3710 66 66 1.78% 1.78%
B 3711 3711 1755 1755 47.29% 47.29%
C 3711 3711 0 0 0.00% 0.00%
D 3711 3711 108 108 2.91% 2.91%

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 0 13 322620 3682.01 433 425 87.5
A 13 254 5776 61.15 433 425 87.5
A 3 137 3946 40.24 433 425 87.5
B 0 189 4114293 61076.73 349 340 67.4
B 10 245 33929 498.67 349 340 67.4
B 3 64 11422 164.53 349 340 67.4
C 14 238 68542 690.91 423 426 98.6
C 15 208 7545 72.21 423 426 98.6
C 13 61 2965 25.75 423 426 98.6
D 1 52 805248 7220.92 419 410 111.5
D 7 80 142365 1273.61 419 410 111.5
D 2 250 40986 364.04 419 410 111.5

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