ASTROSAT CZTI

Data Quality Report

Orbit 42900

Creation date: 2024-06-27T22:45:35.711032
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/AS1T05_143T01_9000005830_42900cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42900cztM0_level2_quad_clean.evt
Size (bytes)400,052,16090,368,640
Size381.5 MB 86.2 MB
Events in quadrant A3,515,232598,846
Events in quadrant B2,630,621628,222
Events in quadrant C3,688,372574,510
Events in quadrant D4,524,927530,557

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139622
B0119112
C0148082
D0175402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57761542.666205%
B5776120.207756%
C57762995.176593%
D57763756.492382%

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 7087 5777 123 123 1.74% 2.13%
B 7087 5777 2 2 0.03% 0.03%
C 7087 5777 240 240 3.39% 4.15%
D 7087 5777 375 375 5.29% 6.49%

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 624763 4935.62 609 595 126.5
A 15 237 449926 3553.09 609 595 126.5
A 2 79 59608 466.65 609 595 126.5
B 0 230 73626 605.56 616 599 120.6
B 0 229 65595 538.96 616 599 120.6
B 4 171 40108 327.62 616 599 120.6
C 5 250 610673 4422.2 586 589 138.0
C 15 214 248760 1798.87 586 589 138.0
C 5 233 210907 1524.49 586 589 138.0
D 1 47 450501 3124.11 588 570 144.0
D 12 6 430409 2984.6 588 570 144.0
D 2 249 423465 2936.39 588 570 144.0

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