ASTROSAT CZTI

Data Quality Report

Orbit 16485

Creation date: 2024-06-27T17:23:23.427773
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_108T01_9000002438_16485cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16485cztM0_level2_quad_clean.evt
Size (bytes)508,472,64095,031,360
Size484.9 MB 90.6 MB
Events in quadrant A4,572,121607,010
Events in quadrant B3,530,611639,396
Events in quadrant C3,495,144602,413
Events in quadrant D3,363,356579,017

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177463
B0145552
C0145632
D0143842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64555057.823393%
B64551201.859024%
C6455550.852053%
D6455761.177382%

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 7736 6456 420 420 5.43% 6.51%
B 7736 6456 53 53 0.69% 0.82%
C 7736 6456 0 0 0.00% 0.00%
D 7736 6457 67 67 0.87% 1.04%

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 15 174 1551016 9871.71 786 773 157.0
A 0 226 6821 38.51 786 773 157.0
A 12 194 5694 31.34 786 773 157.0
B 4 48 138858 895.83 818 800 154.1
B 0 198 51823 331.08 818 800 154.1
B 0 189 49916 318.7 818 800 154.1
C 3 233 277176 1534.71 777 783 180.1
C 14 238 123953 683.92 777 783 180.1
C 7 247 61743 338.49 777 783 180.1
D 12 218 253100 1329.71 776 752 189.8
D 2 33 74265 387.37 776 752 189.8
D 13 248 32132 165.35 776 752 189.8

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