ASTROSAT CZTI

Data Quality Report

Orbit 39141

Creation date: 2024-06-27T22:00:54.868241
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_044T16_9000005442_39141cztM0_level2.fits modeM0/AS1A12_044T16_9000005442_39141cztM0_level2_quad_clean.evt
Size (bytes)372,723,84096,719,040
Size355.5 MB 92.2 MB
Events in quadrant A2,921,734660,549
Events in quadrant B2,493,775685,933
Events in quadrant C2,643,820648,815
Events in quadrant D5,336,287572,284

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118063
B0104882
C0108822
D0194622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5162260.503681%
B5162100.193723%
C516240.077489%
D51623897.535839%

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 7106 5163 9 9 0.13% 0.17%
B 7106 5163 0 0 0.00% 0.00%
C 7106 5163 0 0 0.00% 0.00%
D 7106 5163 355 355 5.00% 6.88%

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 390753 3054.25 632 622 127.7
A 9 143 65858 510.71 632 622 127.7
A 15 223 11313 83.69 632 622 127.7
B 12 111 15006 119.6 630 613 120.3
B 11 111 14019 111.4 630 613 120.3
B 14 111 13636 108.22 630 613 120.3
C 15 214 219910 1534.72 616 620 142.9
C 9 187 16034 107.88 616 620 142.9
C 13 61 4108 24.41 616 620 142.9
D 12 235 1499929 10487.72 600 584 143.0
D 2 120 1266333 8853.75 600 584 143.0
D 2 249 116306 809.46 600 584 143.0

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