ASTROSAT CZTI

Data Quality Report

Orbit 50655

Creation date: 2025-02-08T07:46:01.644162
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/AS1T05_241T01_9000006446_50655cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50655cztM0_level2_quad_clean.evt
Size (bytes)656,095,68096,183,360
Size625.7 MB 91.7 MB
Events in quadrant A5,352,238622,022
Events in quadrant B5,048,478693,504
Events in quadrant C8,655,745535,723
Events in quadrant D4,692,800577,202

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207972
B0200342
C0305392
D0192073

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69414376.295923%
B69413424.927244%
C6941145620.976804%
D69404055.835735%

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 7891 6942 257 257 3.26% 3.70%
B 7891 6942 125 125 1.58% 1.80%
C 7891 6942 1116 1116 14.14% 16.08%
D 7890 6941 292 292 3.70% 4.21%

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 4 4 1034710 5763.99 724 705 179.4
A 12 80 295928 1645.7 724 705 179.4
A 8 38 240585 1337.19 724 705 179.4
B 5 172 1033429 6704.8 726 702 154.0
B 10 247 195660 1265.73 726 702 154.0
B 5 185 144517 933.69 726 702 154.0
C 4 5 2908017 15870.76 666 660 183.2
C 15 1 1074362 5861.15 666 660 183.2
C 15 127 507536 2766.95 666 660 183.2
D 13 84 404319 2079.61 701 677 194.1
D 7 110 220385 1131.96 701 677 194.1
D 2 249 153790 788.86 701 677 194.1

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