ASTROSAT CZTI

Data Quality Report

Orbit 39676

Creation date: 2024-06-27T22:07:36.196805
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_051T01_9000005490_39676cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39676cztM0_level2_quad_clean.evt
Size (bytes)481,861,44089,069,760
Size459.5 MB 84.9 MB
Events in quadrant A6,250,761507,593
Events in quadrant B3,197,365650,870
Events in quadrant C4,818,188590,425
Events in quadrant D3,160,600577,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221853
B0129372
C0178922
D0129412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5282118422.415752%
B52821312.480121%
C52824217.970466%
D5282941.779629%

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 7137 5283 970 970 13.59% 18.36%
B 7137 5283 91 91 1.28% 1.72%
C 7137 5283 368 368 5.16% 6.97%
D 7137 5283 77 77 1.08% 1.46%

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 15 222 3072879 26954.81 565 557 114.0
A 15 174 558376 4893.99 565 557 114.0
A 10 83 412674 3615.68 565 557 114.0
B 5 172 683081 5855.28 605 591 116.6
B 5 255 85776 730.83 605 591 116.6
B 15 85 35304 297.81 605 591 116.6
C 15 208 1626250 12146.58 576 580 133.8
C 9 187 701345 5235.93 576 580 133.8
C 15 214 216628 1614.25 576 580 133.8
D 13 249 207755 1419.98 595 580 145.9
D 12 233 177866 1215.12 595 580 145.9
D 2 250 135933 927.71 595 580 145.9

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