ASTROSAT CZTI

Data Quality Report

Orbit 33337

Creation date: 2024-06-27T20:45:35.655575
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/AS1A11_096T01_9000004766_33337cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33337cztM0_level2_quad_clean.evt
Size (bytes)34,899,8405,304,960
Size33.3 MB 5.1 MB
Events in quadrant A166,03939,065
Events in quadrant B266,69331,653
Events in quadrant C181,37635,966
Events in quadrant D421,10926,337

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02214
B02216
C02216
D02212

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021231454
B035062531
C025421794
D048403413

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02112
B02111
C02115
D02115

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28500.000000%
B2615019.157088%
C26383.041825%
D25010843.200000%

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 3029 330 0 0 0.00% 0.00%
B 3032 288 28 28 0.92% 9.72%
C 3011 288 6 6 0.20% 2.08%
D 3011 269 81 81 2.69% 30.11%

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 10 83 723 64.56 42 41 10.6
A 0 254 684 60.87 42 41 10.6
A 15 169 593 52.25 42 41 10.6
B 0 219 82078 9418.03 34 33 8.7
B 5 172 42439 4867.83 34 33 8.7
B 4 170 3953 449.98 34 33 8.7
C 0 10 21054 2023.95 36 36 10.4
C 15 214 13358 1282.85 36 36 10.4
C 1 23 2743 260.67 36 36 10.4
D 12 233 100081 10866.3 29 28 9.2
D 8 195 67246 7300.24 29 28 9.2
D 12 218 50326 5462.64 29 28 9.2

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