ASTROSAT CZTI

Data Quality Report

Orbit 46151

Creation date: 2024-06-27T23:19:44.251407
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/AS1A13_092T03_9000006176_46151cztM0_level2.fits modeM0/AS1A13_092T03_9000006176_46151cztM0_level2_quad_clean.evt
Size (bytes)877,057,92082,500,480
Size836.4 MB 78.7 MB
Events in quadrant A5,864,244704,246
Events in quadrant B17,937,28710,582
Events in quadrant C3,240,262700,716
Events in quadrant D4,909,340619,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214073
B0577011
C0143461
D0192331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66391892.846814%
B6640655398.689759%
C6640881.325301%
D66403855.798193%

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 7539 6639 3 3 0.04% 0.05%
B 7540 6640 6414 6414 85.07% 96.60%
C 7540 6641 33 33 0.44% 0.50%
D 7540 6641 248 248 3.29% 3.73%

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 10 83 2912305 18609.27 746 729 156.5
A 0 247 22561 139.54 746 729 156.5
A 10 255 16792 102.67 746 729 156.5
B 10 246 17306029 673882.15 123 119 25.7
B 3 112 111528 4338.2 123 119 25.7
B 5 172 23760 920.57 123 119 25.7
C 12 2 201569 1155.06 735 738 173.9
C 14 254 125376 716.84 735 738 173.9
C 2 14 17403 95.84 735 738 173.9
D 5 235 669118 3703.02 723 701 180.5
D 2 249 612280 3388.13 723 701 180.5
D 13 249 417742 2310.4 723 701 180.5

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