ASTROSAT CZTI

Data Quality Report

Orbit 41426

Creation date: 2024-06-27T22:28:51.812779
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_9000005666_41426cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41426cztM0_level2_quad_clean.evt
Size (bytes)346,417,92091,031,040
Size330.4 MB 86.8 MB
Events in quadrant A3,301,333613,634
Events in quadrant B2,647,123627,030
Events in quadrant C3,189,157569,572
Events in quadrant D3,250,247554,891

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132643
B0116402
C0128902
D0134072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5591310.554463%
B5591330.590234%
C55912314.131640%
D5591781.395099%

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 7204 5592 10 10 0.14% 0.18%
B 7204 5592 19 19 0.26% 0.34%
C 7204 5592 222 222 3.08% 3.97%
D 7204 5592 59 59 0.82% 1.06%

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 553978 4233.18 625 611 130.7
A 2 79 274348 2094.05 625 611 130.7
A 13 248 43703 329.65 625 611 130.7
B 5 255 117493 986.41 616 600 118.5
B 0 190 63155 527.87 616 600 118.5
B 0 186 25223 207.78 616 600 118.5
C 0 10 650350 4753.01 587 589 136.7
C 15 214 227804 1662.08 587 589 136.7
C 15 111 13452 94.09 587 589 136.7
D 12 79 330411 2210.2 608 591 149.2
D 13 249 198410 1325.63 608 591 149.2
D 1 47 138293 922.77 608 591 149.2

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