ASTROSAT CZTI

Data Quality Report

Orbit 39409

Creation date: 2024-06-27T22:04:12.136199
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/AS1A12_018T01_9000005470_39409cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39409cztM0_level2_quad_clean.evt
Size (bytes)354,407,04062,271,360
Size338.0 MB 59.4 MB
Events in quadrant A2,461,227418,482
Events in quadrant B2,133,771436,580
Events in quadrant C2,511,466403,176
Events in quadrant D5,707,735350,602

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140632024721448140630114172974
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097571
B091341
C099991
D0196951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39181513.854007%
B3918280.714650%
C3918852.169474%
D391857514.675855%

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 3918 3918 112 112 2.86% 2.86%
B 3918 3918 27 27 0.69% 0.69%
C 3918 3918 73 73 1.86% 1.86%
D 3918 3918 629 629 16.05% 16.05%

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 13 248 564966 6585.66 415 406 85.7
A 10 83 281652 3280.77 415 406 85.7
A 13 254 4701 50.1 415 406 85.7
B 6 203 348083 4269.26 417 405 81.4
B 4 170 75987 928.1 417 405 81.4
B 5 172 58253 710.34 417 405 81.4
C 15 208 685859 7153.71 407 409 95.8
C 15 214 161186 1677.95 407 409 95.8
C 9 187 63524 658.7 407 409 95.8
D 12 235 3672280 37216.16 396 383 98.7
D 13 249 194116 1963.56 396 383 98.7
D 5 222 183923 1860.25 396 383 98.7

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