ASTROSAT CZTI

Data Quality Report

Orbit 08723

Creation date: 2024-06-27T15:36:18.224696
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/AS1A02_132T01_9000001212_08723cztM0_level2.evt modeM0/AS1A02_132T01_9000001212_08723cztM0_level2_quad_clean.evt
Size (bytes)419,544,00057,329,280
Size400.1 MB 54.7 MB
Events in quadrant A3,143,822330,407
Events in quadrant B2,953,712335,679
Events in quadrant C2,819,367336,279
Events in quadrant D3,380,892314,701

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146971376
B0139901247
C0135231128
D0157631707

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013614
B013622
C013610
D013614

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59841312.189171%
B5982741.237044%
C6031530.878793%
D59621141.912110%

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 7657 6390 41 41 0.54% 0.64%
B 7657 6373 3 3 0.04% 0.05%
C 7657 6411 0 0 0.00% 0.00%
D 7657 6368 57 57 0.74% 0.90%

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 13 251 318987 2129.35 732 716 149.5
A 15 174 7640 46.32 732 716 149.5
A 0 226 6899 41.37 732 716 149.5
B 15 255 45571 319.33 737 721 140.4
B 4 173 40917 286.2 737 721 140.4
B 12 111 15074 102.19 737 721 140.4
C 13 61 5509 28.61 721 726 167.2
C 14 67 3721 17.92 721 726 167.2
C 8 222 2760 12.17 721 726 167.2
D 1 52 476621 2768.72 708 692 171.9
D 7 71 117635 680.32 708 692 171.9
D 2 14 54362 312.23 708 692 171.9

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