ASTROSAT CZTI

Data Quality Report

Orbit 15772

Creation date: 2024-06-27T17:13:12.243068
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/AS1A04_100T01_9000002336_15772cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15772cztM0_level2_quad_clean.evt
Size (bytes)461,064,96069,526,080
Size439.7 MB 66.3 MB
Events in quadrant A3,186,835409,806
Events in quadrant B3,502,279416,481
Events in quadrant C3,224,873413,299
Events in quadrant D3,602,823407,174

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138333
B0146222
C0138532
D0153022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6570470.715373%
B6570791.202435%
C6570731.111111%
D65711281.947953%

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 7601 6572 16 16 0.21% 0.24%
B 7601 6572 14 14 0.18% 0.21%
C 7601 6572 0 0 0.00% 0.00%
D 7602 6573 62 62 0.82% 0.94%

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 9 143 60841 365.56 811 794 164.3
A 0 226 7324 39.75 811 794 164.3
A 12 194 6040 31.93 811 794 164.3
B 0 182 87696 557.47 811 789 155.9
B 4 216 85484 543.28 811 789 155.9
B 3 209 48934 308.83 811 789 155.9
C 14 238 118964 643.33 785 788 183.7
C 3 233 22477 118.07 785 788 183.7
C 7 247 20483 107.21 785 788 183.7
D 13 172 343290 1760.85 794 770 194.5
D 10 70 57466 291.47 794 770 194.5
D 13 249 50208 254.15 794 770 194.5

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