ASTROSAT CZTI

Data Quality Report

Orbit 28847

Creation date: 2024-06-27T19:57:07.902276
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_103T08_9000004136_28847cztM0_level2.evt modeM0/AS1A10_103T08_9000004136_28847cztM0_level2_quad_clean.evt
Size (bytes)742,901,760137,744,640
Size708.5 MB 131.4 MB
Events in quadrant A3,304,895989,096
Events in quadrant B3,832,4741,012,073
Events in quadrant C3,416,682969,361
Events in quadrant D11,502,612743,834

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138602
B0155812
C0140682
D0387342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A654280.122287%
B65421352.063589%
C6542741.131153%
D6542276542.265362%

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 7792 6543 0 0 0.00% 0.00%
B 7792 6542 73 73 0.94% 1.12%
C 7792 6542 0 0 0.00% 0.00%
D 7792 6542 2682 2682 34.42% 41.00%

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 5 98 46838 275.89 842 829 166.8
A 13 254 13177 74.04 842 829 166.8
A 0 226 7301 38.81 842 829 166.8
B 5 255 241769 1557.86 848 828 154.7
B 5 172 183102 1178.53 848 828 154.7
B 10 246 42492 269.39 848 828 154.7
C 14 238 139790 733.66 825 833 189.4
C 3 233 35573 183.42 825 833 189.4
C 14 254 6139 28.01 825 833 189.4
D 8 195 5116110 31012.33 703 686 164.9
D 1 52 3442747 20867.54 703 686 164.9
D 13 104 134977 814.14 703 686 164.9

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