ASTROSAT CZTI

Data Quality Report

Orbit 42599

Creation date: 2024-06-27T22:42:02.333270
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_061T07_9000005818_42599cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42599cztM0_level2_quad_clean.evt
Size (bytes)373,040,64090,815,040
Size355.8 MB 86.6 MB
Events in quadrant A3,032,479620,121
Events in quadrant B2,589,870630,338
Events in quadrant C3,611,793578,151
Events in quadrant D4,130,611522,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124642
B0117383
C0143122
D0162062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5702140.245528%
B5701280.491142%
C57012644.630767%
D57013986.981231%

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 7254 5703 7 7 0.10% 0.12%
B 7253 5702 13 13 0.18% 0.23%
C 7253 5702 244 244 3.36% 4.28%
D 7253 5702 371 371 5.12% 6.51%

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 591082 4634.73 622 608 127.4
A 13 6 11698 87.05 622 608 127.4
A 15 237 10877 80.6 622 608 127.4
B 0 245 68306 558.82 619 601 121.2
B 5 255 50334 410.48 619 601 121.2
B 4 141 19306 154.39 619 601 121.2
C 5 250 673573 4805.64 597 600 140.0
C 15 214 252351 1797.73 597 600 140.0
C 5 233 160358 1140.82 597 600 140.0
D 1 52 1101948 7631.48 583 566 144.3
D 2 16 478001 3308.15 583 566 144.3
D 13 249 87446 601.99 583 566 144.3

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