ASTROSAT CZTI

Data Quality Report

Orbit 24636

Creation date: 2024-06-27T19:08:11.196662
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/AS1C05_012T06_9000003616_24636cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24636cztM0_level2_quad_clean.evt
Size (bytes)582,641,280128,514,240
Size555.7 MB 122.6 MB
Events in quadrant A3,137,677905,259
Events in quadrant B3,427,990908,461
Events in quadrant C7,186,975821,365
Events in quadrant D3,499,887850,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129221
B0137901
C0253641
D0141561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58101592.736661%
B58111913.286870%
C58115579.585269%
D58111612.770607%

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 7115 5810 16 16 0.22% 0.28%
B 7116 5811 38 38 0.53% 0.65%
C 7116 5811 14 14 0.20% 0.24%
D 7116 5811 34 34 0.48% 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 12 96 75741 476.68 792 776 157.3
A 13 254 9828 57.56 792 776 157.3
A 6 16 8518 49.23 792 776 157.3
B 3 64 222367 1550.12 780 761 143.0
B 0 230 51331 353.73 780 761 143.0
B 15 32 44530 306.16 780 761 143.0
C 7 247 4023794 23666.36 744 749 170.0
C 14 238 119215 696.9 744 749 170.0
C 10 91 60324 350.46 744 749 170.0
D 1 52 316710 1692.75 778 754 186.7
D 8 195 122196 650.63 778 754 186.7
D 9 1 74427 394.71 778 754 186.7

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