ASTROSAT CZTI

Data Quality Report

Orbit 20210713_A10_053T30_9000004536_level2

Creation date: 2021-07-16T10:27:44.263782
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_053T30_9000004536cztM0_level2_bc.evt modeM0/AS1A10_053T30_9000004536cztM0_level2_quad_clean.evt
Size (bytes)1,855,779,840508,354,560
Size1.7 GB 484.8 MB
Events in quadrant A8,719,3623,256,246
Events in quadrant B21,928,7953,208,746
Events in quadrant C10,771,2363,104,173
Events in quadrant D12,082,5963,103,910

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0828630
B01313020
C0947960
D0925580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08080
B08080
C08080
D08080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396781850.466253%
B3967816804.234084%
C3967811622.928575%
D396782360.594788%

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 46473 39679 1 1 0.00% 0.00%
B 46473 39678 17 17 0.04% 0.04%
C 46473 39678 3 3 0.01% 0.01%
D 46473 39677 15 15 0.03% 0.04%

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 69894 142.1 2236 2203 476.4
A 5 16 56763 114.53 2236 2203 476.4
A 8 192 30797 60.03 2236 2203 476.4
B 6 159 10446959 25506.76 2192 2143 409.5
B 4 80 2002911 4885.98 2192 2143 409.5
B 0 190 430056 1044.98 2192 2143 409.5
C 3 233 2212265 4473.45 2112 2112 494.1
C 0 10 191834 384.01 2112 2112 494.1
C 14 254 78137 153.88 2112 2112 494.1
D 8 195 2800647 5631.68 2200 2135 496.9
D 12 79 411242 823.28 2200 2135 496.9
D 2 250 225760 450.02 2200 2135 496.9

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