ASTROSAT CZTI

Data Quality Report

Orbit 35002

Creation date: 2022-06-11T10:20:58.307070
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/AS1T05_010T01_9000005016_35002cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35002cztM0_level2_quad_clean.evt
Size (bytes)402,384,96088,994,880
Size383.7 MB 84.9 MB
Events in quadrant A2,601,234602,327
Events in quadrant B2,778,919617,228
Events in quadrant C2,704,395591,385
Events in quadrant D3,775,406546,937

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106553
B0110962
C0106672
D0144782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4806250.520183%
B4806390.811486%
C4806551.144403%
D48061312.725759%

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 6959 4807 25 25 0.36% 0.52%
B 6959 4807 21 21 0.30% 0.44%
C 6959 4807 46 46 0.66% 0.96%
D 6959 4807 110 110 1.58% 2.29%

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 15 174 112038 910.33 612 601 122.4
A 10 83 73614 596.44 612 601 122.4
A 15 169 39907 321.09 612 601 122.4
B 5 172 116333 1010.38 613 601 114.5
B 4 232 93979 815.23 613 601 114.5
B 0 190 69986 605.76 613 601 114.5
C 15 214 202244 1478.99 591 597 136.3
C 0 10 153494 1121.43 591 597 136.3
C 14 67 41537 300.28 591 597 136.3
D 8 195 874654 6176.57 581 566 141.5
D 12 6 220770 1556.03 581 566 141.5
D 12 128 93002 653.18 581 566 141.5

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