ASTROSAT CZTI

Data Quality Report

Orbit 16271

Creation date: 2024-06-27T17:20:27.983543
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/AS1A05_182T02_9000002392_16271cztM0_level2.evt modeM0/AS1A05_182T02_9000002392_16271cztM0_level2_quad_clean.evt
Size (bytes)277,928,64044,496,000
Size265.1 MB 42.4 MB
Events in quadrant A1,459,790300,579
Events in quadrant B3,705,332263,867
Events in quadrant C1,543,199282,798
Events in quadrant D1,500,096282,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061680
B0130730
C064230
D064560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A304650.164150%
B304675224.688116%
C3046140.459619%
D304670.229810%

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 3047 3047 0 0 0.00% 0.00%
B 3047 3047 526 526 17.26% 17.26%
C 3047 3047 0 0 0.00% 0.00%
D 3047 3047 6 6 0.20% 0.20%

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 9 143 13948 179.4 374 368 75.7
A 15 174 4686 57.04 374 368 75.7
A 0 226 3347 39.35 374 368 75.7
B 3 112 2300804 36807.14 329 322 62.5
B 0 198 41973 666.41 329 322 62.5
B 3 64 25565 403.88 329 322 62.5
C 3 233 125597 1551.01 348 350 80.8
C 14 238 57040 702.03 348 350 80.8
C 13 61 2492 26.53 348 350 80.8
D 1 52 73511 832.75 359 349 87.9
D 10 70 47354 535.02 359 349 87.9
D 15 0 23873 267.76 359 349 87.9

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