ASTROSAT CZTI

Data Quality Report

Orbit 28955

Creation date: 2024-06-27T19:58:29.304947
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/AS1A10_123T08_9000004152_28955cztM0_level2.evt modeM0/AS1A10_123T08_9000004152_28955cztM0_level2_quad_clean.evt
Size (bytes)486,731,52094,351,680
Size464.2 MB 90.0 MB
Events in quadrant A3,243,821594,936
Events in quadrant B3,389,184610,882
Events in quadrant C3,337,484586,702
Events in quadrant D4,290,465573,175

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143991
B0147001
C0145221
D0174461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70621281.812518%
B70621512.138204%
C70631812.562650%
D70631442.038794%

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 7277 7063 0 0 0.00% 0.00%
B 7277 7063 11 11 0.15% 0.16%
C 7278 7064 0 0 0.00% 0.00%
D 7278 7064 63 63 0.87% 0.89%

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 13 254 12151 66.71 836 817 169.9
A 6 16 11494 62.84 836 817 169.9
A 3 137 8456 44.96 836 817 169.9
B 10 245 97491 600.97 831 808 160.9
B 12 111 20270 120.97 831 808 160.9
B 11 111 18613 110.67 831 808 160.9
C 14 238 149978 792.14 797 800 188.3
C 14 254 31862 164.94 797 800 188.3
C 3 233 28909 149.26 797 800 188.3
D 1 52 562329 2890.54 803 778 194.3
D 8 195 392802 2017.91 803 778 194.3
D 7 80 127123 650.35 803 778 194.3

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