ASTROSAT CZTI

Data Quality Report

Orbit 09179

Creation date: 2024-06-27T15:42:21.719479
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/AS1C02_041T02_9000001282_09179cztM0_level2.evt modeM0/AS1C02_041T02_9000001282_09179cztM0_level2_quad_clean.evt
Size (bytes)449,138,88068,883,840
Size428.3 MB 65.7 MB
Events in quadrant A3,387,513409,889
Events in quadrant B3,270,538414,268
Events in quadrant C3,209,777407,260
Events in quadrant D3,288,943397,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139892
B0138951
C0137641
D0142621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6558610.930162%
B6558841.280878%
C6558590.899665%
D65581031.570601%

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 7413 6559 1 1 0.01% 0.02%
B 7413 6559 11 11 0.15% 0.17%
C 7413 6559 0 0 0.00% 0.00%
D 7413 6559 50 50 0.67% 0.76%

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 213435 1341.58 778 762 158.5
A 1 162 102676 642.89 778 762 158.5
A 1 178 22802 139.03 778 762 158.5
B 8 234 84384 561.6 786 766 148.9
B 4 80 54907 363.62 786 766 148.9
B 0 214 21747 140.91 786 766 148.9
C 9 68 236398 1332.01 761 765 176.9
C 13 61 5940 29.25 761 765 176.9
C 8 222 3313 14.4 761 765 176.9
D 1 52 295165 1489.85 754 734 197.6
D 2 14 48126 239.81 754 734 197.6
D 2 234 26445 130.1 754 734 197.6

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