ASTROSAT CZTI

Data Quality Report

Orbit 06521

Creation date: 2024-06-27T15:08:21.900261
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/AS1G06_136T02_9000000876_06521cztM0_level2.evt modeM0/AS1G06_136T02_9000000876_06521cztM0_level2_quad_clean.evt
Size (bytes)935,775,360188,982,720
Size892.4 MB 180.2 MB
Events in quadrant A6,696,8951,194,650
Events in quadrant B7,171,2831,197,841
Events in quadrant C6,672,9441,183,414
Events in quadrant D6,820,8671,150,849

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03021917
B03115830
C03044218
D03101519

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144441260.872335%
B144401861.288089%
C144431941.343211%
D144431511.045489%

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 15366 14453 1 1 0.01% 0.01%
B 15366 14453 57 57 0.37% 0.39%
C 15366 14453 86 86 0.56% 0.60%
D 15366 14453 35 35 0.23% 0.24%

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 15 236 417145 1244.73 1627 1591 333.8
A 0 226 15758 42.44 1627 1591 333.8
A 12 194 14812 39.6 1627 1591 333.8
B 5 143 346062 1102.17 1636 1594 312.5
B 0 219 118299 373.41 1636 1594 312.5
B 4 48 95971 301.97 1636 1594 312.5
C 9 237 456966 1249.59 1573 1578 364.4
C 7 247 21180 53.79 1573 1578 364.4
C 14 222 17345 43.26 1573 1578 364.4
D 2 136 337456 876.52 1576 1525 383.3
D 2 14 111284 286.38 1576 1525 383.3
D 2 152 108246 278.46 1576 1525 383.3

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