ASTROSAT CZTI

Data Quality Report

Orbit 40646

Creation date: 2024-06-27T22:18:39.064200
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_029T01_9000005556_40646cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40646cztM0_level2_quad_clean.evt
Size (bytes)534,605,76070,997,760
Size509.8 MB 67.7 MB
Events in quadrant A2,709,077590,413
Events in quadrant B11,034,951170,926
Events in quadrant C2,532,699581,118
Events in quadrant D3,101,149438,128

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113153
B0363232
C0108842
D0130202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5267100.189861%
B5267400275.982533%
C5267200.379723%
D5267105019.935447%

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 7060 5268 4 4 0.06% 0.08%
B 7060 5267 3801 3801 53.84% 72.17%
C 7060 5268 20 20 0.28% 0.38%
D 7060 5267 70 70 0.99% 1.33%

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 470797 4024.37 575 563 116.8
A 13 252 8600 68.78 575 563 116.8
A 13 254 6625 51.88 575 563 116.8
B 7 202 8596095 111731.59 402 390 76.9
B 0 229 553848 7194.14 402 390 76.9
B 0 190 212323 2754.82 402 390 76.9
C 15 214 229949 1749.96 561 565 131.1
C 14 254 80925 613.06 561 565 131.1
C 12 249 25442 189.79 561 565 131.1
D 12 227 653656 5147.78 506 492 126.9
D 12 191 231123 1817.67 506 492 126.9
D 12 79 105661 828.87 506 492 126.9

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