ASTROSAT CZTI

Data Quality Report

Orbit 20230525_A12_035T01_9000005666_level2

Creation date: 2023-05-30T01:19:35.034877
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/AS1A12_035T01_9000005666cztM0_level2.fits modeM0/AS1A12_035T01_9000005666cztM0_level2_quad_clean.evt
Size (bytes)1,569,755,5201,757,093,760
Size1.5 GB 1.6 GB
Events in quadrant A9,381,72410,787,744
Events in quadrant B9,030,68810,863,661
Events in quadrant C9,160,81610,212,330
Events in quadrant D8,007,4269,399,695

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03885320
B03863790
C03877610
D04652650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035680
B035680
C035680
D035680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06520
B06520
C06520
D06520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1745096530.374193%
B17450930511.748334%
C17450945802.624506%
D17450968333.915557%

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 239832 174509 0 0 0.00% 0.00%
B 239832 174501 0 0 0.00% 0.00%
C 239832 174028 0 0 0.00% 0.00%
D 239832 174421 0 0 0.00% 0.00%

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 7 110 7758 8.95 2452 2292 610.5
A 9 19 7627 8.74 2452 2292 610.5
A 0 29 7327 8.25 2452 2292 610.5
B 2 9 7813 11.78 2388 2267 470.7
B 3 80 6615 9.24 2388 2267 470.7
B 2 8 6398 8.78 2388 2267 470.7
C 1 81 7410 8.48 2416 2261 607.3
C 1 80 7121 8.0 2416 2261 607.3
C 3 202 7050 7.88 2416 2261 607.3
D 7 3 5878 6.26 2285 2080 606.4
D 4 160 5840 6.2 2285 2080 606.4
D 10 189 5771 6.09 2285 2080 606.4

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