ASTROSAT CZTI

Data Quality Report

Orbit 08755

Creation date: 2024-06-27T15:36:46.713558
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/AS1A03_038T01_9000001218_08755cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08755cztM0_level2_quad_clean.evt
Size (bytes)400,409,280101,531,520
Size381.9 MB 96.8 MB
Events in quadrant A2,919,502673,266
Events in quadrant B2,887,120679,630
Events in quadrant C2,843,501671,247
Events in quadrant D3,083,213646,902

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124262
B0123091
C0121211
D0130361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5770911.577123%
B5770731.265165%
C5770601.039861%
D5770811.403813%

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 7025 5770 8 8 0.11% 0.14%
B 7025 5770 1 1 0.01% 0.02%
C 7025 5770 0 0 0.00% 0.00%
D 7025 5770 15 15 0.21% 0.26%

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 5 16 45294 301.64 734 718 147.8
A 3 1 25409 167.08 734 718 147.8
A 13 251 17838 115.85 734 718 147.8
B 4 80 15513 107.16 732 717 138.1
B 12 111 14605 100.58 732 717 138.1
B 11 111 11921 81.15 732 717 138.1
C 14 64 28522 166.2 721 727 167.2
C 13 61 5361 27.71 721 727 167.2
C 12 4 2435 10.21 721 727 167.2
D 2 152 137327 762.39 717 699 179.2
D 1 52 101228 560.96 717 699 179.2
D 2 136 39913 218.82 717 699 179.2

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