ASTROSAT CZTI

Data Quality Report

Orbit 48000

Creation date: 2024-08-13T10:26:34.608924
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/AS1A13_062T02_9000006384_48000cztM0_level2.fits modeM0/AS1A13_062T02_9000006384_48000cztM0_level2_quad_clean.evt
Size (bytes)494,219,520113,955,840
Size471.3 MB 108.7 MB
Events in quadrant A7,656,379710,887
Events in quadrant B3,269,992794,095
Events in quadrant C3,407,134755,816
Events in quadrant D3,405,464691,725

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275052
B0149202
C0153572
D0155132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71545798.093374%
B7155741.034242%
C7155721.006289%
D7155460.642907%

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 7734 7155 279 279 3.61% 3.90%
B 7735 7156 5 5 0.06% 0.07%
C 7735 7156 27 27 0.35% 0.38%
D 7735 7156 26 26 0.34% 0.36%

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 10 83 4115850 25087.2 776 758 164.0
A 0 31 543486 3308.68 776 758 164.0
A 13 254 10982 62.33 776 758 164.0
B 0 198 42413 261.43 801 776 159.3
B 5 32 33283 204.1 801 776 159.3
B 0 197 22123 134.03 801 776 159.3
C 14 254 204090 1066.79 796 800 190.6
C 1 3 42735 220.06 796 800 190.6
C 12 2 31711 162.21 796 800 190.6
D 2 249 143689 717.38 790 763 199.2
D 14 34 71118 353.13 790 763 199.2
D 11 224 69141 343.21 790 763 199.2

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