ASTROSAT CZTI

Data Quality Report

Orbit 20685

Creation date: 2024-06-27T18:18:20.778189
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/AS1A05_229T02_9000003060_20685cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20685cztM0_level2_quad_clean.evt
Size (bytes)571,651,200121,417,920
Size545.2 MB 115.8 MB
Events in quadrant A3,380,424846,218
Events in quadrant B4,249,795826,019
Events in quadrant C3,632,093799,953
Events in quadrant D5,607,813749,820

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141301
B0168931
C0148911
D0210081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6520981.503067%
B65213605.520626%
C65201912.929448%
D652076411.717791%

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 7770 6521 0 0 0.00% 0.00%
B 7771 6522 191 191 2.46% 2.93%
C 7770 6521 57 57 0.73% 0.87%
D 7770 6521 633 633 8.15% 9.71%

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 0 226 7665 39.06 878 865 174.1
A 3 137 6518 32.47 878 865 174.1
A 12 194 6333 31.41 878 865 174.1
B 7 220 824291 5164.39 852 834 159.4
B 0 190 28789 175.32 852 834 159.4
B 3 64 22525 136.04 852 834 159.4
C 9 54 282523 1491.17 819 826 188.9
C 14 238 131388 691.13 819 826 188.9
C 3 233 19314 97.87 819 826 188.9
D 1 52 1718923 8786.54 818 797 195.5
D 13 138 327482 1670.68 818 797 195.5
D 12 227 265090 1351.6 818 797 195.5

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