ASTROSAT CZTI

Data Quality Report

Orbit 26986

Creation date: 2024-06-27T19:35:17.370731
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/AS1A09_145T01_9000003900_26986cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26986cztM0_level2_quad_clean.evt
Size (bytes)833,160,96094,942,080
Size794.6 MB 90.5 MB
Events in quadrant A9,947,074507,768
Events in quadrant B3,456,050668,555
Events in quadrant C3,507,788639,985
Events in quadrant D7,846,034567,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343470
B0145260
C0146580
D0279120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7030271738.648649%
B70311722.446309%
C70301792.546230%
D7030158822.588905%

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 7155 7030 2038 2038 28.48% 28.99%
B 7156 7032 1 1 0.01% 0.01%
C 7155 7031 3 3 0.04% 0.04%
D 7155 7030 1554 1554 21.72% 22.11%

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 14 235 7032540 46608.98 741 729 150.9
A 6 16 18177 115.65 741 729 150.9
A 5 168 16700 105.86 741 729 150.9
B 12 111 20479 116.23 879 859 168.8
B 11 111 18733 105.89 879 859 168.8
B 14 111 16715 93.94 879 859 168.8
C 14 238 134487 666.97 849 856 200.4
C 15 208 52562 258.07 849 856 200.4
C 13 61 5826 24.81 849 856 200.4
D 1 52 3845804 20002.59 801 780 192.2
D 12 233 701291 3644.2 801 780 192.2
D 2 250 156573 810.47 801 780 192.2

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