ASTROSAT CZTI

Data Quality Report

Orbit 51302

Creation date: 2025-03-23T22:19:24.945057
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/AS1C07_001T03_9000006456_51302cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51302cztM0_level2_quad_clean.evt
Size (bytes)741,323,52079,663,680
Size707.0 MB 76.0 MB
Events in quadrant A5,981,831578,359
Events in quadrant B4,257,527630,433
Events in quadrant C12,505,914229,121
Events in quadrant D4,204,847531,005

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221221
B0170531
C0414961
D0168641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63423265.140334%
B63433004.729623%
C6343404763.802617%
D63431552.443639%

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 7322 6343 293 293 4.00% 4.62%
B 7323 6344 132 132 1.80% 2.08%
C 7323 6344 3489 3489 47.64% 55.00%
D 7323 6344 93 93 1.27% 1.47%

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 12 3 1553585 9329.53 667 650 166.5
A 9 96 507563 3045.37 667 650 166.5
A 12 250 303377 1818.69 667 650 166.5
B 10 254 363187 2570.06 660 638 141.1
B 5 172 337706 2389.43 660 638 141.1
B 5 185 228735 1616.95 660 638 141.1
C 4 12 8432666 77573.02 389 385 108.7
C 15 179 963834 8863.28 389 385 108.7
C 15 219 634712 5835.51 389 385 108.7
D 8 176 966159 5317.36 649 625 181.6
D 15 170 149547 820.14 649 625 181.6
D 12 128 72951 398.31 649 625 181.6

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