ASTROSAT CZTI

Data Quality Report

Orbit 43935

Creation date: 2024-06-27T22:57:23.034631
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/AS1A13_024T02_9000005918_43935cztM0_level2.fits modeM0/AS1A13_024T02_9000005918_43935cztM0_level2_quad_clean.evt
Size (bytes)552,893,760107,334,720
Size527.3 MB 102.4 MB
Events in quadrant A6,513,284710,068
Events in quadrant B3,559,763758,830
Events in quadrant C4,728,117674,849
Events in quadrant D5,139,783633,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244182
B0154992
C0189402
D0201242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67723735.507974%
B67721191.757236%
C67726409.450679%
D67724997.368576%

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 7852 6773 222 222 2.83% 3.28%
B 7852 6773 68 68 0.87% 1.00%
C 7852 6773 645 645 8.21% 9.52%
D 7852 6773 422 422 5.37% 6.23%

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 15 222 2405675 16134.59 721 706 149.1
A 10 83 1174678 7876.01 721 706 149.1
A 7 191 37888 249.45 721 706 149.1
B 0 200 188909 1342.62 730 708 140.2
B 5 235 180561 1283.07 730 708 140.2
B 0 213 94925 672.14 730 708 140.2
C 1 241 1701966 10410.41 695 699 163.4
C 14 254 175571 1070.08 695 699 163.4
C 3 233 82079 497.98 695 699 163.4
D 12 17 360050 2041.25 698 675 176.1
D 1 52 348443 1975.32 698 675 176.1
D 13 249 262457 1486.92 698 675 176.1

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