ASTROSAT CZTI

Data Quality Report

Orbit 27404

Creation date: 2024-06-27T19:39:43.942702
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/AS1T03_249T01_9000003934_27404cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27404cztM0_level2_quad_clean.evt
Size (bytes)2,361,631,680370,713,600
Size2.2 GB 353.5 MB
Events in quadrant A15,106,9862,367,922
Events in quadrant B15,492,5662,383,938
Events in quadrant C15,380,2882,270,262
Events in quadrant D23,562,4242,186,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0615570
B0630780
C0625740
D0891040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0662
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A293144141.412294%
B293304951.687692%
C293186182.107920%
D2926721807.448662%

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 37565 29451 10 10 0.03% 0.03%
B 37565 29484 40 40 0.11% 0.14%
C 37565 29461 38 38 0.10% 0.13%
D 37565 29392 1607 1607 4.28% 5.47%

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 12 96 98861 123.86 3878 3804 767.5
A 13 254 49678 59.77 3878 3804 767.5
A 12 189 36814 43.01 3878 3804 767.5
B 0 230 227462 315.71 3812 3727 708.7
B 15 32 133419 183.0 3812 3727 708.7
B 12 111 86732 117.13 3812 3727 708.7
C 14 238 593079 691.91 3681 3709 851.8
C 2 16 443411 516.2 3681 3709 851.8
C 13 61 25047 25.05 3681 3709 851.8
D 1 52 8580944 9975.06 3652 3565 859.9
D 2 250 727980 842.46 3652 3565 859.9
D 10 50 231270 264.81 3652 3565 859.9

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