ASTROSAT CZTI

Data Quality Report

Orbit 26171

Creation date: 2024-06-27T19:25:38.480320
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_138T04_9000003776_26171cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26171cztM0_level2_quad_clean.evt
Size (bytes)195,373,44061,801,920
Size186.3 MB 58.9 MB
Events in quadrant A1,333,598419,688
Events in quadrant B1,365,336435,871
Events in quadrant C1,489,964417,331
Events in quadrant D1,548,623411,742

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055180
B056450
C060580
D062160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A258040.155039%
B257710.038805%
C2570371.439689%
D2571100.388954%

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 3038 2674 0 0 0.00% 0.00%
B 2795 2671 0 0 0.00% 0.00%
C 2824 2665 4 4 0.14% 0.15%
D 2881 2671 16 16 0.56% 0.60%

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 3760 49.38 345 341 69.2
A 0 226 2927 37.35 345 341 69.2
A 3 137 2826 35.89 345 341 69.2
B 0 230 9222 136.51 347 341 65.1
B 12 111 7289 106.8 347 341 65.1
B 11 111 6598 96.17 347 341 65.1
C 2 16 64148 786.72 344 348 81.1
C 14 238 57603 706.01 344 348 81.1
C 3 233 23914 290.59 344 348 81.1
D 1 52 237420 2890.0 346 339 82.0
D 2 234 9936 116.99 346 339 82.0
D 14 35 5837 67.02 346 339 82.0

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