ASTROSAT CZTI

Data Quality Report

Orbit 29490

Creation date: 2024-06-27T20:04:39.278372
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_064T03_9000004246_29490cztM0_level2.evt modeM0/AS1A10_064T03_9000004246_29490cztM0_level2_quad_clean.evt
Size (bytes)843,733,440102,061,440
Size804.6 MB 97.3 MB
Events in quadrant A3,214,986708,439
Events in quadrant B3,306,269721,405
Events in quadrant C3,793,023688,596
Events in quadrant D14,775,458493,880

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140672
B0142532
C0156222
D0485792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68311522.225150%
B68321772.590749%
C68322123.103044%
D6831494072.317377%

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 6901 6834 0 0 0.00% 0.00%
B 6902 6835 3 3 0.04% 0.04%
C 6902 6835 8 8 0.12% 0.12%
D 6901 6834 4403 4403 63.80% 64.43%

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 13846 77.42 829 807 168.4
A 5 98 11866 65.66 829 807 168.4
A 3 137 8131 43.48 829 807 168.4
B 5 172 26974 168.0 821 798 155.8
B 0 190 26139 162.64 821 798 155.8
B 12 111 19123 117.61 821 798 155.8
C 3 233 290292 1544.2 795 798 187.5
C 7 247 232836 1237.72 795 798 187.5
C 14 238 134520 713.29 795 798 187.5
D 8 195 6649619 45956.5 613 593 144.7
D 1 52 2803529 19373.23 613 593 144.7
D 12 33 2717956 18781.77 613 593 144.7

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