ASTROSAT CZTI

Data Quality Report

Orbit 36298

Creation date: 2022-06-15T16:36:16.201159
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/AS1A10_071T33_9000005186_36298cztM0_level2.evt modeM0/AS1A10_071T33_9000005186_36298cztM0_level2_quad_clean.evt
Size (bytes)1,348,712,640187,634,880
Size1.3 GB 178.9 MB
Events in quadrant A6,595,3751,265,068
Events in quadrant B10,068,9911,231,422
Events in quadrant C7,002,3611,256,818
Events in quadrant D16,251,335977,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282873
B0387873
C0289173
D0576483

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13760240.174419%
B137609056.577035%
C137601280.930233%
D13760328523.873547%

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 17760 13763 8 8 0.05% 0.06%
B 17760 13763 777 777 4.38% 5.65%
C 17760 13763 94 94 0.53% 0.68%
D 17760 13763 3308 3308 18.63% 24.04%

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 360890 1130.89 1575 1544 317.8
A 9 143 83840 258.99 1575 1544 317.8
A 12 189 36762 110.83 1575 1544 317.8
B 5 172 2140272 7274.71 1523 1480 294.0
B 5 236 1080176 3668.99 1523 1480 294.0
B 0 155 354731 1201.52 1523 1480 294.0
C 15 214 572724 1598.92 1527 1535 357.2
C 0 10 393386 1096.9 1527 1535 357.2
C 0 207 55196 150.21 1527 1535 357.2
D 12 227 5622542 16717.02 1361 1322 336.3
D 7 223 2854158 8484.09 1361 1322 336.3
D 12 6 1492818 4435.58 1361 1322 336.3

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