ASTROSAT CZTI

Data Quality Report

Orbit 11306

Creation date: 2024-06-27T16:11:03.499682
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/AS1A04_144T01_9000001652_11306cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11306cztM0_level2_quad_clean.evt
Size (bytes)621,875,52084,870,720
Size593.1 MB 80.9 MB
Events in quadrant A5,327,053543,530
Events in quadrant B5,034,696526,831
Events in quadrant C2,978,985562,029
Events in quadrant D5,054,388485,720

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202213
B0193712
C0133782
D0194312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64706039.319938%
B647080612.457496%
C6470240.370943%
D64705728.840804%

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 7490 6471 449 449 5.99% 6.94%
B 7490 6471 505 505 6.74% 7.80%
C 7490 6471 0 0 0.00% 0.00%
D 7490 6471 439 439 5.86% 6.78%

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 8 5 1306748 8446.7 752 736 154.6
A 0 8 1053202 6806.88 752 736 154.6
A 1 162 20271 126.34 752 736 154.6
B 3 64 1607852 11324.32 739 724 141.9
B 4 239 439098 3088.92 739 724 141.9
B 4 81 32055 220.77 739 724 141.9
C 14 234 15092 81.62 758 765 175.5
C 9 204 5632 27.73 758 765 175.5
C 13 61 5629 27.71 758 765 175.5
D 10 253 1480798 8691.35 709 689 170.3
D 1 52 281854 1651.03 709 689 170.3
D 8 195 224624 1314.97 709 689 170.3

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