ASTROSAT CZTI

Data Quality Report

Orbit 28810

Creation date: 2024-06-27T19:56:40.262990
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_121T01_9000004134_28810cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28810cztM0_level2_quad_clean.evt
Size (bytes)709,401,600103,921,920
Size676.5 MB 99.1 MB
Events in quadrant A4,075,256670,899
Events in quadrant B4,543,853671,842
Events in quadrant C4,491,046651,513
Events in quadrant D7,853,735617,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169320
B0183410
C0183190
D0286470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76893214.174795%
B76905707.412224%
C76894636.021589%
D7689106113.798934%

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 7689 7689 13 13 0.17% 0.17%
B 7690 7690 223 223 2.90% 2.90%
C 7689 7689 1 1 0.01% 0.01%
D 7688 7688 771 771 10.03% 10.03%

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 14 235 344244 1781.26 949 927 192.7
A 4 2 23797 118.66 949 927 192.7
A 15 174 20606 102.1 949 927 192.7
B 5 172 725168 4110.83 928 903 176.2
B 0 229 77133 432.67 928 903 176.2
B 12 111 21320 115.88 928 903 176.2
C 3 233 709414 3336.28 905 908 212.4
C 14 238 184151 862.87 905 908 212.4
C 14 254 61941 287.4 905 908 212.4
D 1 52 2063949 9527.39 895 866 216.5
D 8 195 1200421 5539.59 895 866 216.5
D 2 250 325083 1497.25 895 866 216.5

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