ASTROSAT CZTI

Data Quality Report

Orbit 11902

Creation date: 2024-06-27T16:19:52.242185
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/AS1A04_088T05_9000001764_11902cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11902cztM0_level2_quad_clean.evt
Size (bytes)194,454,72017,671,680
Size185.4 MB 16.9 MB
Events in quadrant A1,428,80088,779
Events in quadrant B1,484,48486,723
Events in quadrant C1,284,12993,944
Events in quadrant D1,523,66589,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057372
B060041
C054741
D061191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243131212.834225%
B243136715.096668%
C24312329.543398%
D243124610.119292%

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 2467 2433 4 4 0.16% 0.16%
B 2467 2433 15 15 0.61% 0.62%
C 2467 2433 0 0 0.00% 0.00%
D 2467 2433 21 21 0.85% 0.86%

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 8 15 45135 643.33 323 313 69.7
A 1 162 39795 566.68 323 313 69.7
A 14 63 30169 428.52 323 313 69.7
B 4 239 180519 2685.39 324 314 67.1
B 0 218 9459 136.28 324 314 67.1
B 0 214 8944 128.6 324 314 67.1
C 8 128 3154 35.84 327 327 78.9
C 13 61 2379 26.01 327 327 78.9
C 8 112 1886 19.76 327 327 78.9
D 8 195 149607 1832.85 323 311 81.5
D 1 52 112899 1382.2 323 311 81.5
D 13 104 16946 204.22 323 311 81.5

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