ASTROSAT CZTI

Data Quality Report

Orbit 09449

Creation date: 2024-06-27T15:46:13.987397
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/AS1C02_045T01_9000001342_09449cztM0_level2.evt modeM0/AS1C02_045T01_9000001342_09449cztM0_level2_quad_clean.evt
Size (bytes)893,197,440192,850,560
Size851.8 MB 183.9 MB
Events in quadrant A7,704,1711,224,782
Events in quadrant B6,287,7321,246,365
Events in quadrant C5,775,8001,248,081
Events in quadrant D6,398,0581,219,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029236
B029132
C029228
D029224

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227
B0227
C0227
D0224

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343652936
B0298072398
C0292132570
D0307232580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129771471.132773%
B131071290.984207%
C13084400.305717%
D130531381.057228%

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 22558 13588 41 41 0.18% 0.30%
B 22558 13657 55 55 0.24% 0.40%
C 22558 13649 3 3 0.01% 0.02%
D 22558 13619 90 90 0.40% 0.66%

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 5 1695871 5706.3 1465 1434 296.9
A 1 162 188644 630.46 1465 1434 296.9
A 1 178 66673 219.7 1465 1434 296.9
B 0 187 169861 607.49 1473 1433 277.3
B 0 214 137290 490.01 1473 1433 277.3
B 0 219 78366 277.48 1473 1433 277.3
C 9 68 147009 441.97 1432 1439 329.4
C 4 254 27802 80.04 1432 1439 329.4
C 13 61 10783 28.37 1432 1439 329.4
D 1 52 312918 865.94 1433 1396 359.8
D 12 233 245721 679.15 1433 1396 359.8
D 7 9 136214 374.75 1433 1396 359.8

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