ASTROSAT CZTI

Data Quality Report

Orbit 09461

Creation date: 2024-06-27T15:46:25.280012
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/AS1T01_177T01_9000001344_09461cztM0_level2.evt modeM0/AS1T01_177T01_9000001344_09461cztM0_level2_quad_clean.evt
Size (bytes)461,131,20079,182,720
Size439.8 MB 75.5 MB
Events in quadrant A3,343,586493,203
Events in quadrant B3,198,826494,022
Events in quadrant C3,133,439483,200
Events in quadrant D3,843,196469,415

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014126148
B013801148
C013957130
D015924163

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01362
B01362
C01362
D01362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6564841.279707%
B6561781.188843%
C6571590.897885%
D65581762.683745%

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 7668 6617 3 3 0.04% 0.05%
B 7668 6618 2 2 0.03% 0.03%
C 7668 6620 0 0 0.00% 0.00%
D 7668 6620 102 102 1.33% 1.54%

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 8 5 181072 1094.58 804 787 164.7
A 1 162 29075 171.75 804 787 164.7
A 14 111 13341 76.22 804 787 164.7
B 5 255 40813 262.92 799 780 152.3
B 0 187 18819 118.47 799 780 152.3
B 0 214 18576 116.87 799 780 152.3
C 9 68 112516 621.53 774 778 179.8
C 13 61 5772 27.78 774 778 179.8
C 14 234 2457 9.34 774 778 179.8
D 1 52 561243 2953.38 768 749 189.8
D 12 233 191980 1007.64 768 749 189.8
D 13 104 67582 352.16 768 749 189.8

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