ASTROSAT CZTI

Data Quality Report

Orbit 23339

Creation date: 2024-06-27T18:53:01.939526
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/AS1A07_135T02_9000003450_23339cztM0_level2.evt modeM0/AS1A07_135T02_9000003450_23339cztM0_level2_quad_clean.evt
Size (bytes)317,001,60058,933,440
Size302.3 MB 56.2 MB
Events in quadrant A2,235,968366,323
Events in quadrant B2,288,323371,432
Events in quadrant C2,345,359364,983
Events in quadrant D2,410,980352,642

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121432539
B0123002569
C0124512683
D0129042731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012123
B012123
C012123
D012220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4678160.342027%
B4663250.536136%
C4685591.259338%
D4638250.539025%

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 5990 4981 0 0 0.00% 0.00%
B 5959 4961 2 2 0.03% 0.04%
C 5988 4985 0 0 0.00% 0.00%
D 6083 4927 13 13 0.21% 0.26%

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 6589 50.89 579 566 118.4
A 3 137 5228 39.39 579 566 118.4
A 0 226 4939 36.95 579 566 118.4
B 0 190 34254 301.09 572 557 111.9
B 12 111 13642 116.92 572 557 111.9
B 11 111 12122 103.34 572 557 111.9
C 14 238 88247 665.66 559 562 131.7
C 10 9 32751 244.36 559 562 131.7
C 3 233 24377 180.79 559 562 131.7
D 1 52 140644 1007.57 561 545 139.0
D 12 227 79764 569.73 561 545 139.0
D 12 233 27109 191.04 561 545 139.0

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