ASTROSAT CZTI

Data Quality Report

Orbit 39897

Creation date: 2024-06-27T22:10:05.207772
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_037T07_9000005504_39897cztM0_level2.fits modeM0/AS1A12_037T07_9000005504_39897cztM0_level2_quad_clean.evt
Size (bytes)346,893,12091,932,480
Size330.8 MB 87.7 MB
Events in quadrant A3,511,429622,196
Events in quadrant B2,738,995642,654
Events in quadrant C2,753,366601,124
Events in quadrant D3,430,884552,049

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135673
B0112602
C0110902
D0135452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52161843.527607%
B5216310.594325%
C5216541.035276%
D52161803.450920%

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 7338 5217 185 185 2.52% 3.55%
B 7338 5217 23 23 0.31% 0.44%
C 7338 5217 57 57 0.78% 1.09%
D 7338 5217 141 141 1.92% 2.70%

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 6 10 514173 4105.31 615 604 125.1
A 10 83 483120 3857.09 615 604 125.1
A 13 248 82047 651.03 615 604 125.1
B 5 255 128914 1088.53 608 591 117.9
B 0 230 84181 709.07 608 591 117.9
B 0 229 53338 447.44 608 591 117.9
C 15 214 221066 1577.26 596 602 139.8
C 15 159 143353 1021.28 596 602 139.8
C 0 10 37605 264.73 596 602 139.8
D 13 249 393001 2635.67 599 582 148.9
D 2 249 236509 1584.6 599 582 148.9
D 12 227 231344 1549.91 599 582 148.9

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