ASTROSAT CZTI

Data Quality Report

Orbit 24782

Creation date: 2024-06-27T19:09:50.300379
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/AS1A07_147T01_9000003624_24782cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24782cztM0_level2_quad_clean.evt
Size (bytes)583,992,00090,181,440
Size556.9 MB 86.0 MB
Events in quadrant A3,829,523584,656
Events in quadrant B5,460,120567,119
Events in quadrant C3,846,170551,364
Events in quadrant D4,079,676543,458

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153090
B0206050
C0153980
D0163290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69431962.822987%
B694280411.581677%
C69422153.097090%
D69431632.347688%

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 9438 6945 0 0 0.00% 0.00%
B 9437 6944 379 379 4.02% 5.46%
C 9437 6944 0 0 0.00% 0.00%
D 9438 6945 8 8 0.08% 0.12%

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 13 254 9756 44.69 991 972 196.5
A 3 137 8728 39.46 991 972 196.5
A 0 226 8535 38.48 991 972 196.5
B 3 64 1745915 9679.65 943 920 180.3
B 12 111 22383 119.05 943 920 180.3
B 11 111 20248 107.21 943 920 180.3
C 14 238 147582 686.01 928 938 213.8
C 8 208 35062 159.64 928 938 213.8
C 1 16 24642 110.89 928 938 213.8
D 8 195 400628 1753.8 943 917 227.9
D 1 52 105093 457.09 943 917 227.9
D 2 234 23999 101.28 943 917 227.9

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