ASTROSAT CZTI

Data Quality Report

Orbit 35553

Creation date: 2022-04-26T10:24:43.302522
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/AS1A11_093T01_9000005090_35553cztM0_level2.evt modeM0/AS1A11_093T01_9000005090_35553cztM0_level2_quad_clean.evt
Size (bytes)527,172,48066,565,440
Size502.8 MB 63.5 MB
Events in quadrant A7,034,497312,388
Events in quadrant B2,808,462460,884
Events in quadrant C3,110,259458,372
Events in quadrant D2,680,916440,595

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244433
B0114792
C0122542
D0111552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4888194839.852700%
B48881422.905074%
C48881683.436989%
D4888801.636661%

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 7011 4888 758 758 10.81% 15.51%
B 7011 4888 86 86 1.23% 1.76%
C 7011 4889 140 140 2.00% 2.86%
D 7011 4889 50 50 0.71% 1.02%

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 15 169 5322973 61807.22 419 411 86.1
A 10 83 80624 931.46 419 411 86.1
A 13 6 9913 110.34 419 411 86.1
B 5 172 525775 4907.41 566 552 107.0
B 0 189 31663 290.68 566 552 107.0
B 12 111 12616 112.72 566 552 107.0
C 0 10 566382 4427.13 554 558 127.8
C 15 214 215887 1684.78 554 558 127.8
C 10 49 80671 626.82 554 558 127.8
D 8 195 121682 921.3 548 535 131.5
D 13 249 100012 756.5 548 535 131.5
D 5 157 71687 541.1 548 535 131.5

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