ASTROSAT CZTI

Data Quality Report

Orbit 15511

Creation date: 2024-06-27T17:09:39.084914
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/AS1T02_085T01_9000002296_15511cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15511cztM0_level2_quad_clean.evt
Size (bytes)1,104,393,600171,167,040
Size1.0 GB 163.2 MB
Events in quadrant A8,189,8211,052,976
Events in quadrant B6,732,0151,097,828
Events in quadrant C7,327,1531,065,638
Events in quadrant D10,280,8221,029,464

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331834
B0286573
C0301083
D0399063

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135855123.768863%
B13585940.691940%
C135851411.037909%
D135856224.578579%

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 16027 13590 286 286 1.78% 2.10%
B 16027 13590 16 16 0.10% 0.12%
C 16027 13589 0 0 0.00% 0.00%
D 16027 13590 466 466 2.91% 3.43%

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 14 238 1314991 4065.93 1605 1569 323.0
A 14 237 630663 1947.47 1605 1569 323.0
A 0 253 47525 142.27 1605 1569 323.0
B 0 189 72877 230.09 1627 1583 309.9
B 0 230 65075 204.91 1627 1583 309.9
B 4 190 63129 198.63 1627 1583 309.9
C 3 233 871358 2377.72 1570 1578 365.8
C 14 238 239751 651.1 1570 1578 365.8
C 7 247 45398 119.79 1570 1578 365.8
D 1 52 2508932 6538.0 1579 1534 383.5
D 5 222 1487920 3875.73 1579 1534 383.5
D 5 51 95936 246.15 1579 1534 383.5

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