ASTROSAT CZTI

Data Quality Report

Orbit 50712

Creation date: 2025-02-12T04:03:09.124585
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/AS1C09_003T01_9000006448_50712cztM0_level2.fits modeM0/AS1C09_003T01_9000006448_50712cztM0_level2_quad_clean.evt
Size (bytes)563,031,36093,769,920
Size536.9 MB 89.4 MB
Events in quadrant A4,243,214616,804
Events in quadrant B3,985,826682,475
Events in quadrant C6,105,627550,081
Events in quadrant D6,000,742534,264

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168882
B0164632
C0227382
D0224102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65262824.321177%
B65262313.539687%
C652696314.756359%
D652671010.879559%

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 7646 6527 194 194 2.54% 2.97%
B 7646 6527 125 125 1.63% 1.92%
C 7646 6527 709 709 9.27% 10.86%
D 7646 6527 580 580 7.59% 8.89%

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 9 191 295529 1680.14 695 675 175.5
A 4 249 285758 1624.46 695 675 175.5
A 8 62 219893 1249.15 695 675 175.5
B 7 0 490517 3327.0 697 673 147.2
B 6 51 179242 1212.83 697 673 147.2
B 0 213 139969 946.09 697 673 147.2
C 5 10 1779387 9931.97 647 642 179.1
C 0 193 564437 3148.06 647 642 179.1
C 13 3 243877 1358.15 647 642 179.1
D 8 176 1756063 9640.94 656 630 182.1
D 11 245 303477 1663.25 656 630 182.1
D 2 226 216705 1186.7 656 630 182.1

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