ASTROSAT CZTI

Data Quality Report

Orbit 24594

Creation date: 2024-06-27T19:07:41.252559
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_189T01_9000003614_24594cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24594cztM0_level2_quad_clean.evt
Size (bytes)801,296,640108,492,480
Size764.2 MB 103.5 MB
Events in quadrant A3,303,143776,859
Events in quadrant B3,436,185786,471
Events in quadrant C11,893,457591,830
Events in quadrant D5,207,084687,832

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137713
B0142772
C0397342
D0198662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6325821.296443%
B63251051.660079%
C6325401563.478261%
D63255288.347826%

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 7560 6326 0 0 0.00% 0.00%
B 7560 6326 2 2 0.03% 0.03%
C 7560 6326 2966 2966 39.23% 46.89%
D 7560 6326 425 425 5.62% 6.72%

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 13 254 10156 55.03 856 842 169.2
A 0 226 7262 37.93 856 842 169.2
A 3 137 7251 37.87 856 842 169.2
B 0 190 69617 436.15 849 830 157.7
B 7 202 39110 242.72 849 830 157.7
B 12 111 18989 115.14 849 830 157.7
C 7 247 8990426 56156.95 692 696 160.1
C 14 238 108175 671.4 692 696 160.1
C 2 16 51048 314.54 692 696 160.1
D 1 52 1045784 5498.54 804 783 190.1
D 7 238 666320 3501.9 804 783 190.1
D 8 195 445245 2338.65 804 783 190.1

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