ASTROSAT CZTI

Data Quality Report

Orbit 16755

Creation date: 2024-06-27T17:27:28.991100
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/AS1T03_015T01_9000002486_16755cztM0_level2.evt modeM0/AS1T03_015T01_9000002486_16755cztM0_level2_quad_clean.evt
Size (bytes)1,009,506,240212,351,040
Size962.7 MB 202.5 MB
Events in quadrant A6,118,6191,444,811
Events in quadrant B5,998,1171,457,809
Events in quadrant C6,331,8791,415,426
Events in quadrant D11,321,7031,291,423

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263413
B0258812
C0267372
D0417412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11881980.824846%
B118811000.841680%
C118811241.043683%
D11881159313.407962%

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 13298 11884 68 68 0.51% 0.57%
B 13298 11884 31 31 0.23% 0.26%
C 13298 11884 8 8 0.06% 0.07%
D 13298 11884 1272 1272 9.57% 10.70%

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 15 174 808824 2921.13 1371 1340 276.4
A 14 4 33171 115.15 1371 1340 276.4
A 0 226 11950 38.38 1371 1340 276.4
B 10 16 180201 690.24 1371 1334 259.1
B 15 35 144050 550.73 1371 1334 259.1
B 0 219 78698 298.54 1371 1334 259.1
C 3 233 642703 2103.59 1315 1323 304.9
C 0 207 303215 990.14 1315 1323 304.9
C 14 238 205423 669.4 1315 1323 304.9
D 1 52 5587130 18583.04 1252 1220 300.6
D 15 0 550304 1826.68 1252 1220 300.6
D 2 33 249957 827.49 1252 1220 300.6

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