ASTROSAT CZTI

Data Quality Report

Orbit 20190608_A05_082T09_9000002978_level2

Creation date: 2025-12-01T08:00:52.196211
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/AS1A05_082T09_9000002978cztM0_level2.fits modeM0/AS1A05_082T09_9000002978cztM0_level2_quad_clean.evt
Size (bytes)303,765,120271,771,200
Size289.7 MB 259.2 MB
Events in quadrant A907,004588,400
Events in quadrant B2,000,3261,843,747
Events in quadrant C2,032,1521,728,669
Events in quadrant D1,788,3781,608,549

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07240
B07240
C07240
D07240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02182340
B0750220
C0814480
D0802730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A358192469368.938273%
B358193961.105559%
C358196451.800720%
D358194561.273067%

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 39128 27394 0 0 0.00% 0.00%
B 39128 35812 0 0 0.00% 0.00%
C 39129 35814 0 0 0.00% 0.00%
D 39128 35811 0 0 0.00% 0.00%

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 14 188 881 10.98 235 221 60.1
A 0 29 879 10.95 235 221 60.1
A 14 204 734 8.53 235 221 60.1
B 2 9 1584 10.05 527 499 108.0
B 3 17 1399 8.34 527 499 108.0
B 2 8 1325 7.65 527 499 108.0
C 12 241 1473 6.97 536 500 139.5
C 12 250 1380 6.31 536 500 139.5
C 2 191 1360 6.16 536 500 139.5
D 3 14 1294 6.03 511 465 137.5
D 6 231 1281 5.93 511 465 137.5
D 10 189 1273 5.88 511 465 137.5

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