ASTROSAT CZTI

Data Quality Report

Orbit 20181213_A05_165T12_9000002562_level2

Creation date: 2025-11-26T13:19:01.461983
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/AS1A05_165T12_9000002562cztM0_level2.fits modeM0/AS1A05_165T12_9000002562cztM0_level2_quad_clean.evt
Size (bytes)694,137,600684,432,000
Size662.0 MB 652.7 MB
Events in quadrant A4,292,4844,181,831
Events in quadrant B4,125,8944,186,426
Events in quadrant C4,121,8283,895,869
Events in quadrant D3,563,1423,545,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01490
B01490
C01490
D01490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01456460
B01471940
C01460000
D01772240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020640
B020640
C020640
D014300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A702066670.950061%
B702058001.139520%
C702069851.403014%
D7020621223.022534%

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 81732 70180 0 0 0.00% 0.00%
B 81732 70174 0 0 0.00% 0.00%
C 81731 70179 0 0 0.00% 0.00%
D 81731 70156 0 0 0.00% 0.00%

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 0 29 4077 10.97 1117 1048 276.2
A 7 110 3457 8.72 1117 1048 276.2
A 0 30 3199 7.79 1117 1048 276.2
B 2 9 3236 10.51 1087 1043 208.8
B 3 17 2810 8.46 1087 1043 208.8
B 2 8 2802 8.43 1087 1043 208.8
C 12 241 2846 6.49 1090 1018 281.7
C 2 191 2782 6.26 1090 1018 281.7
C 7 111 2777 6.25 1090 1018 281.7
D 6 231 2600 6.19 1017 924 271.0
D 3 14 2574 6.09 1017 924 271.0
D 15 46 2470 5.71 1017 924 271.0

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