ASTROSAT CZTI

Data Quality Report

Orbit 20786

Creation date: 2024-06-27T18:19:35.106881
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/AS1A05_013T01_9000003070_20786cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20786cztM0_level2_quad_clean.evt
Size (bytes)509,065,920114,572,160
Size485.5 MB 109.3 MB
Events in quadrant A3,143,319798,483
Events in quadrant B3,615,571776,655
Events in quadrant C3,102,709754,596
Events in quadrant D5,148,675721,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129992
B0145862
C0129192
D0194342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59971041.734200%
B59971582.634651%
C59971362.267801%
D59975068.437552%

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 7312 5998 0 0 0.00% 0.00%
B 7312 5998 45 45 0.62% 0.75%
C 7312 5998 0 0 0.00% 0.00%
D 7312 5998 410 410 5.61% 6.84%

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 0 226 7365 40.32 817 803 162.7
A 12 194 5938 31.55 817 803 162.7
A 3 137 5842 30.96 817 803 162.7
B 7 220 235337 1601.18 787 771 146.5
B 0 182 112775 764.56 787 771 146.5
B 3 64 79552 537.77 787 771 146.5
C 14 238 122992 704.57 761 768 173.5
C 9 54 5655 28.17 761 768 173.5
C 13 61 5390 26.64 761 768 173.5
D 1 52 1257932 6763.29 773 753 185.9
D 7 38 619056 3326.31 773 753 185.9
D 1 20 183185 981.44 773 753 185.9

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