ASTROSAT CZTI

Data Quality Report

Orbit 46861

Creation date: 2024-06-27T23:28:37.114866
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_053T01_9000006274_46861cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46861cztM0_level2_quad_clean.evt
Size (bytes)436,656,960102,513,600
Size416.4 MB 97.8 MB
Events in quadrant A5,865,383672,966
Events in quadrant B3,271,150694,541
Events in quadrant C3,274,240661,069
Events in quadrant D3,247,830621,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209731
B0140771
C0146071
D0142761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65001712.630769%
B6500911.400000%
C65011973.030303%
D65011091.676665%

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 7320 6501 4 4 0.05% 0.06%
B 7320 6501 10 10 0.14% 0.15%
C 7321 6502 149 149 2.04% 2.29%
D 7321 6502 37 37 0.51% 0.57%

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 10 83 3088845 20833.9 710 695 148.2
A 13 248 19383 126.08 710 695 148.2
A 13 254 9962 62.52 710 695 148.2
B 3 112 338521 2388.35 705 681 141.5
B 5 172 36941 256.34 705 681 141.5
B 0 245 30490 210.73 705 681 141.5
C 14 254 472762 2892.09 692 693 163.2
C 1 241 101199 615.74 692 693 163.2
C 13 61 4585 23.84 692 693 163.2
D 13 249 265603 1494.86 706 684 177.2
D 1 52 102267 573.2 706 684 177.2
D 14 49 41288 229.12 706 684 177.2

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