ASTROSAT CZTI

Data Quality Report

Orbit 18792

Creation date: 2024-06-27T17:54:46.497750
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_024T01_9000002810_18792cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18792cztM0_level2_quad_clean.evt
Size (bytes)907,145,280172,120,320
Size865.1 MB 164.1 MB
Events in quadrant A6,300,9031,096,233
Events in quadrant B6,707,9231,108,264
Events in quadrant C6,305,8711,061,433
Events in quadrant D7,268,6311,039,139

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273264
B0284583
C0272563
D0305923

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131461591.209493%
B131463062.327704%
C131462231.696333%
D131461781.354024%

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 13966 13148 0 0 0.00% 0.00%
B 13966 13148 45 45 0.32% 0.34%
C 13966 13148 2 2 0.01% 0.02%
D 13966 13148 55 55 0.39% 0.42%

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 8 205 52470 157.51 1606 1573 323.1
A 6 16 34409 101.61 1606 1573 323.1
A 13 254 21310 61.08 1606 1573 323.1
B 7 220 287849 949.84 1599 1559 301.4
B 4 216 38714 123.27 1599 1559 301.4
B 12 111 36423 115.67 1599 1559 301.4
C 14 238 239140 661.64 1541 1549 359.1
C 0 207 27873 73.31 1541 1549 359.1
C 8 128 11862 28.72 1541 1549 359.1
D 5 222 797389 2118.07 1554 1506 375.8
D 7 223 210942 557.37 1554 1506 375.8
D 12 110 179931 474.84 1554 1506 375.8

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