ASTROSAT CZTI

Data Quality Report

Orbit 08956

Creation date: 2024-06-27T15:39:23.679872
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/AS1A03_051T01_9000001242_08956cztM0_level2.evt modeM0/AS1A03_051T01_9000001242_08956cztM0_level2_quad_clean.evt
Size (bytes)482,405,76075,458,880
Size460.1 MB 72.0 MB
Events in quadrant A3,824,487449,805
Events in quadrant B3,204,790466,532
Events in quadrant C3,496,906454,986
Events in quadrant D3,624,733442,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156813
B0138482
C0150082
D0150692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67431902.817737%
B6743360.533887%
C67431952.891888%
D6743741.097434%

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 8818 6744 122 122 1.38% 1.81%
B 8818 6745 1 1 0.01% 0.01%
C 8817 6744 116 116 1.32% 1.72%
D 8818 6745 40 40 0.45% 0.59%

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 5 16 427533 2640.7 796 779 161.6
A 8 5 312286 1927.57 796 779 161.6
A 13 164 11060 63.62 796 779 161.6
B 0 214 19325 120.25 813 794 154.1
B 12 111 16516 102.02 813 794 154.1
B 11 111 12981 79.08 813 794 154.1
C 4 254 470587 2623.66 774 778 179.1
C 13 61 5970 28.99 774 778 179.1
C 4 238 3466 15.01 774 778 179.1
D 8 195 261394 1324.69 775 756 196.8
D 6 225 117543 593.57 775 756 196.8
D 2 14 69059 347.15 775 756 196.8

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