ASTROSAT CZTI

Data Quality Report

Orbit 35979

Creation date: 2022-07-18T23:44:20.057037
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_050T19_9000005156_35979cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35979cztM0_level2_quad_clean.evt
Size (bytes)870,621,12081,336,960
Size830.3 MB 77.6 MB
Events in quadrant A2,599,177667,251
Events in quadrant B14,322,501184,693
Events in quadrant C3,726,087630,327
Events in quadrant D5,353,571598,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112353
B0462462
C0146522
D0195922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5420120.221402%
B5420541799.944649%
C54203396.254613%
D542056610.442804%

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 6764 5421 1 1 0.01% 0.02%
B 6763 5419 5307 5307 78.47% 97.93%
C 6764 5420 261 261 3.86% 4.82%
D 6764 5421 522 522 7.72% 9.63%

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 10 83 170692 1371.76 612 599 124.0
A 15 169 48525 386.51 612 599 124.0
A 13 6 10214 77.54 612 599 124.0
B 5 31 6778573 166398.14 207 201 40.7
B 5 15 5136178 126079.98 207 201 40.7
B 5 14 960967 23585.26 207 201 40.7
C 9 187 1041997 7760.13 575 577 134.2
C 15 214 223406 1660.41 575 577 134.2
C 0 10 143866 1067.72 575 577 134.2
D 1 52 1377979 9735.95 573 555 141.5
D 12 17 1009951 7134.64 573 555 141.5
D 8 195 232851 1641.92 573 555 141.5

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