ASTROSAT CZTI

Data Quality Report

Orbit 28901

Creation date: 2024-06-27T19:57:46.792496
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/AS1A10_064T01_9000004144_28901cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28901cztM0_level2_quad_clean.evt
Size (bytes)1,271,574,720160,395,840
Size1.2 GB 153.0 MB
Events in quadrant A5,741,0801,077,761
Events in quadrant B5,869,6331,091,442
Events in quadrant C10,442,9201,001,673
Events in quadrant D15,627,242835,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252202
B0255682
C0400074
D0547492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12295560.455470%
B12296690.561158%
C122955704.636031%
D12295410033.346889%

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 13970 12295 10 10 0.07% 0.08%
B 13971 12296 2 2 0.01% 0.02%
C 13970 12295 141 141 1.01% 1.15%
D 13970 12295 3919 3919 28.05% 31.87%

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 6 16 38928 127.13 1470 1439 294.9
A 13 170 26336 84.43 1470 1439 294.9
A 13 254 23683 75.43 1470 1439 294.9
B 15 33 97209 342.89 1460 1421 279.4
B 15 32 48234 167.58 1460 1421 279.4
B 12 111 34522 118.49 1460 1421 279.4
C 3 233 4671242 14284.86 1396 1405 326.9
C 14 238 230486 700.75 1396 1405 326.9
C 15 208 61602 184.14 1396 1405 326.9
D 8 195 9241572 30980.37 1260 1227 298.3
D 1 52 1582169 5300.47 1260 1227 298.3
D 2 234 42648 138.87 1260 1227 298.3

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