ASTROSAT CZTI

Data Quality Report

Orbit 28742

Creation date: 2024-06-27T19:55:41.934321
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_123T08_9000004126_28742cztM0_level2.evt modeM0/AS1A10_123T08_9000004126_28742cztM0_level2_quad_clean.evt
Size (bytes)1,007,501,760186,612,480
Size960.8 MB 178.0 MB
Events in quadrant A5,879,2601,215,052
Events in quadrant B6,587,1091,234,427
Events in quadrant C8,176,4521,180,909
Events in quadrant D9,021,2381,153,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260963
B0279423
C0329023
D0354843

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12562880.700525%
B125622471.966247%
C125613943.136693%
D125614133.287955%

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 14937 12564 9 9 0.06% 0.07%
B 14937 12562 56 56 0.37% 0.45%
C 14936 12561 9 9 0.06% 0.07%
D 14936 12562 270 270 1.81% 2.15%

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 59719 196.83 1490 1458 296.0
A 6 16 57511 189.37 1490 1458 296.0
A 13 254 25400 80.88 1490 1458 296.0
B 5 255 400825 1423.13 1482 1444 280.6
B 4 80 228855 810.34 1482 1444 280.6
B 10 245 75309 263.21 1482 1444 280.6
C 3 233 2298029 6965.96 1424 1431 329.7
C 14 238 256315 773.1 1424 1431 329.7
C 14 254 45431 133.46 1424 1431 329.7
D 8 195 1907996 5561.3 1431 1391 342.8
D 1 52 1495156 4357.1 1431 1391 342.8
D 12 233 55637 158.23 1431 1391 342.8

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