ASTROSAT CZTI

Data Quality Report

Orbit 35036

Creation date: 2022-03-22T18:46:55.128675
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_123T17_9000005018_35036cztM0_level2.evt modeM0/AS1A10_123T17_9000005018_35036cztM0_level2_quad_clean.evt
Size (bytes)447,713,28078,019,200
Size427.0 MB 74.4 MB
Events in quadrant A2,893,271486,598
Events in quadrant B3,293,011495,013
Events in quadrant C3,078,264488,412
Events in quadrant D3,875,582461,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125843
B0138042
C0128282
D0157642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A616370.113581%
B61631161.882200%
C6163130.210936%
D6163400.649035%

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 8820 6162 0 0 0.00% 0.00%
B 8820 6162 92 92 1.04% 1.49%
C 8820 6162 11 11 0.12% 0.18%
D 8820 6163 31 31 0.35% 0.50%

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 79581 544.3 713 698 144.9
A 10 255 13888 91.01 713 698 144.9
A 13 6 12853 83.87 713 698 144.9
B 5 200 292564 2133.82 706 686 136.8
B 5 172 55854 403.31 706 686 136.8
B 0 190 54162 390.94 706 686 136.8
C 15 214 257634 1584.18 699 703 162.2
C 0 10 61336 373.85 699 703 162.2
C 14 67 23098 138.08 699 703 162.2
D 8 195 809437 4777.65 693 674 169.3
D 2 249 93474 548.2 693 674 169.3
D 13 249 72675 425.34 693 674 169.3

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