ASTROSAT CZTI

Data Quality Report

Orbit 19047

Creation date: 2024-06-27T17:58:28.160597
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_046T01_9000002834_19047cztM0_level2.evt modeM0/AS1A05_046T01_9000002834_19047cztM0_level2_quad_clean.evt
Size (bytes)508,913,280110,831,040
Size485.3 MB 105.7 MB
Events in quadrant A3,176,245733,858
Events in quadrant B3,460,859762,843
Events in quadrant C3,789,202729,473
Events in quadrant D4,559,122690,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133652
B0143122
C0155892
D0176842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6302250.396699%
B6302701.110758%
C6302641.015551%
D6302570.904475%

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 7582 6303 1 1 0.01% 0.02%
B 7582 6303 18 18 0.24% 0.29%
C 7582 6303 0 0 0.00% 0.00%
D 7582 6303 58 58 0.76% 0.92%

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 8305 45.33 823 808 165.4
A 0 226 7036 37.66 823 808 165.4
A 3 137 6142 32.25 823 808 165.4
B 3 112 119331 762.61 831 812 155.4
B 7 220 68984 438.65 831 812 155.4
B 12 111 18391 113.11 831 812 155.4
C 3 233 445142 2370.04 805 814 187.5
C 14 238 124420 659.31 805 814 187.5
C 9 15 78962 416.84 805 814 187.5
D 7 238 1505467 7779.31 800 779 193.4
D 2 234 24503 122.65 800 779 193.4
D 9 68 13868 67.67 800 779 193.4

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