ASTROSAT CZTI

Data Quality Report

Orbit 44310

Creation date: 2024-06-27T23:01:56.944817
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/AS1A13_004T13_9000005988_44310cztM0_level2.fits modeM0/AS1A13_004T13_9000005988_44310cztM0_level2_quad_clean.evt
Size (bytes)495,040,320117,354,240
Size472.1 MB 111.9 MB
Events in quadrant A5,572,554770,865
Events in quadrant B3,968,169800,385
Events in quadrant C3,515,680775,366
Events in quadrant D4,703,091700,052

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225383
B0166303
C0156083
D0189303

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72812723.735751%
B72821902.609173%
C7282961.318319%
D72822493.419390%

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 8996 7281 49 49 0.54% 0.67%
B 8997 7284 41 41 0.46% 0.56%
C 8997 7285 37 37 0.41% 0.51%
D 8997 7284 139 139 1.54% 1.91%

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 10 83 1704374 9867.77 828 811 172.6
A 15 223 565894 3273.2 828 811 172.6
A 7 3 32996 186.43 828 811 172.6
B 5 255 215206 1301.72 829 803 164.7
B 0 155 112291 676.89 829 803 164.7
B 0 190 100131 603.06 829 803 164.7
C 14 254 230520 1191.65 818 824 192.8
C 1 16 27670 139.27 818 824 192.8
C 15 208 23787 119.13 818 824 192.8
D 5 222 469116 2305.78 809 785 203.1
D 13 249 208946 1024.86 809 785 203.1
D 1 20 204424 1002.6 809 785 203.1

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