ASTROSAT CZTI

Data Quality Report

Orbit 11481

Creation date: 2024-06-27T16:13:35.571325
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_107T01_9000001684_11481cztM0_level2.evt modeM0/AS1A04_107T01_9000001684_11481cztM0_level2_quad_clean.evt
Size (bytes)528,935,04058,331,520
Size504.4 MB 55.6 MB
Events in quadrant A6,195,986332,197
Events in quadrant B4,823,628356,147
Events in quadrant C2,059,908392,388
Events in quadrant D2,637,071371,091

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215432
B0173581
C092001
D0108591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4453122827.576914%
B4453115325.892657%
C4453130.291938%
D44531703.817651%

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 5009 4455 849 849 16.95% 19.06%
B 5009 4455 719 719 14.35% 16.14%
C 5009 4455 1 1 0.02% 0.02%
D 5009 4455 65 65 1.30% 1.46%

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 4185638 41829.72 484 473 100.1
A 9 143 53077 525.76 484 473 100.1
A 1 162 28455 279.67 484 473 100.1
B 4 239 1298035 14012.49 482 469 92.6
B 4 81 1123920 12132.21 482 469 92.6
B 15 204 193158 2080.86 482 469 92.6
C 12 4 12729 99.31 524 524 122.9
C 13 61 3899 27.46 524 524 122.9
C 14 234 2398 15.25 524 524 122.9
D 1 52 250470 1987.57 517 502 125.8
D 5 222 122300 968.45 517 502 125.8
D 2 120 79939 631.63 517 502 125.8

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