ASTROSAT CZTI

Data Quality Report

Orbit 26182

Creation date: 2024-06-27T19:25:46.424263
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/AS1A09_012T01_9000003778_26182cztM0_level2.evt modeM0/AS1A09_012T01_9000003778_26182cztM0_level2_quad_clean.evt
Size (bytes)110,822,40029,448,000
Size105.7 MB 28.1 MB
Events in quadrant A683,167198,342
Events in quadrant B706,950204,800
Events in quadrant C723,722197,841
Events in quadrant D1,146,622188,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028350
B028880
C029450
D043210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136720.146306%
B136770.512070%
C1367191.389905%
D1367755.486467%

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 1367 1367 0 0 0.00% 0.00%
B 1367 1367 0 0 0.00% 0.00%
C 1367 1367 0 0 0.00% 0.00%
D 1367 1367 80 80 5.85% 5.85%

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 13 254 2537 63.15 176 172 37.4
A 3 137 1624 38.77 176 172 37.4
A 0 13 1588 37.81 176 172 37.4
B 12 111 4088 107.77 180 176 36.3
B 11 111 3540 92.68 180 176 36.3
B 14 111 3231 84.16 180 176 36.3
C 14 238 28405 675.27 171 173 41.8
C 3 233 16573 392.26 171 173 41.8
C 8 128 3637 82.85 171 173 41.8
D 1 52 476985 11522.13 167 163 41.4
D 12 233 27630 663.72 167 163 41.4
D 2 234 6155 144.79 167 163 41.4

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