ASTROSAT CZTI

Data Quality Report

Orbit 24188

Creation date: 2024-06-27T19:03:14.580190
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/AS1A07_067T01_9000003578_24188cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24188cztM0_level2_quad_clean.evt
Size (bytes)460,149,12088,482,240
Size438.8 MB 84.4 MB
Events in quadrant A3,112,755577,094
Events in quadrant B3,052,684589,847
Events in quadrant C3,078,467556,211
Events in quadrant D4,293,807546,808

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124381
B0122881
C0124881
D0165651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58581031.758279%
B5859691.177675%
C5859991.689708%
D58593055.205666%

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 7178 5859 30 30 0.42% 0.51%
B 7179 5859 11 11 0.15% 0.19%
C 7179 5860 5 5 0.07% 0.09%
D 7179 5859 224 224 3.12% 3.82%

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 6 16 118885 768.67 777 764 153.7
A 13 254 8847 52.6 777 764 153.7
A 0 226 6951 40.26 777 764 153.7
B 4 216 38076 261.52 767 751 142.7
B 12 111 16807 112.5 767 751 142.7
B 11 111 14993 99.79 767 751 142.7
C 14 238 121302 721.28 730 737 167.2
C 9 54 74826 443.24 730 737 167.2
C 2 16 22104 127.83 730 737 167.2
D 12 233 705078 3960.45 738 718 177.8
D 7 238 581521 3265.72 738 718 177.8
D 1 52 124868 698.07 738 718 177.8

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