ASTROSAT CZTI

Data Quality Report

Orbit 21204

Creation date: 2024-06-27T18:24:54.083856
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/AS1A06_002T01_9000003134_21204cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21204cztM0_level2_quad_clean.evt
Size (bytes)644,751,36095,872,320
Size614.9 MB 91.4 MB
Events in quadrant A3,690,079671,410
Events in quadrant B6,538,625601,939
Events in quadrant C3,259,550636,955
Events in quadrant D5,614,677555,647

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150932
B0234482
C0137032
D0209622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62601672.667732%
B6261130920.907203%
C62611071.708992%
D626177012.298355%

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 7580 6260 95 95 1.25% 1.52%
B 7581 6261 1055 1055 13.92% 16.85%
C 7581 6261 3 3 0.04% 0.05%
D 7581 6261 653 653 8.61% 10.43%

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 15 236 314335 1862.54 844 830 168.3
A 5 16 59920 351.05 844 830 168.3
A 11 47 43748 254.97 844 830 168.3
B 0 182 3339894 22464.82 791 775 148.6
B 0 190 37212 245.14 791 775 148.6
B 0 229 18274 117.73 791 775 148.6
C 14 238 126262 684.17 790 796 183.4
C 3 233 36530 194.86 790 796 183.4
C 0 10 13223 67.76 790 796 183.4
D 1 52 1158172 6332.95 752 733 182.8
D 7 238 925446 5059.59 752 733 182.8
D 6 143 189771 1034.33 752 733 182.8

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