ASTROSAT CZTI

Data Quality Report

Orbit 20696

Creation date: 2024-06-27T18:18:27.937150
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/AS1A05_229T02_9000003060_20696cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20696cztM0_level2_quad_clean.evt
Size (bytes)329,025,60062,637,120
Size313.8 MB 59.7 MB
Events in quadrant A2,289,307398,722
Events in quadrant B2,642,888399,265
Events in quadrant C2,356,653392,435
Events in quadrant D2,360,754381,631

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095841
B0107071
C097851
D099101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4619380.822689%
B4620952.056277%
C4620601.298701%
D4620561.212121%

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 5694 4620 0 0 0.00% 0.00%
B 5695 4621 28 28 0.49% 0.61%
C 5695 4620 0 0 0.00% 0.00%
D 5695 4621 14 14 0.25% 0.30%

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 0 226 5238 38.49 596 585 120.9
A 3 137 4535 32.67 596 585 120.9
A 12 194 4256 30.37 596 585 120.9
B 7 220 210533 1890.7 589 577 111.0
B 0 197 62778 560.14 589 577 111.0
B 3 64 38535 341.82 589 577 111.0
C 14 238 90076 675.33 572 576 132.5
C 7 247 31751 235.23 572 576 132.5
C 3 233 5621 38.07 572 576 132.5
D 5 222 66227 473.6 579 566 138.6
D 1 52 43340 308.52 579 566 138.6
D 2 234 21522 151.15 579 566 138.6

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