ASTROSAT CZTI

Data Quality Report

Orbit 03458

Creation date: 2024-06-27T14:29:16.702496
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/AS1G05_167T01_9000000456_03458cztM0_level2.evt modeM0/AS1G05_167T01_9000000456_03458cztM0_level2_quad_clean.evt
Size (bytes)452,442,24077,408,640
Size431.5 MB 73.8 MB
Events in quadrant A3,241,940482,113
Events in quadrant B3,591,077484,471
Events in quadrant C3,238,540480,668
Events in quadrant D3,209,560463,918

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135783
B0147422
C0134372
D0136902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6200671.080645%
B6200741.193548%
C6200741.193548%
D62001011.629032%

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 7500 6201 9 9 0.12% 0.15%
B 7500 6201 5 5 0.07% 0.08%
C 7500 6201 18 18 0.24% 0.29%
D 7500 6201 48 48 0.64% 0.77%

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 50 82517 500.9 800 786 163.2
A 8 15 61849 374.23 800 786 163.2
A 0 31 10732 60.96 800 786 163.2
B 15 204 329474 2142.48 810 793 153.4
B 7 252 68999 444.6 810 793 153.4
B 4 81 15987 99.04 810 793 153.4
C 1 192 110673 607.18 786 793 181.0
C 15 208 33184 178.99 786 793 181.0
C 1 16 15780 82.82 786 793 181.0
D 13 223 202992 1095.89 778 760 184.5
D 2 37 23317 122.24 778 760 184.5
D 1 31 21896 114.54 778 760 184.5

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