ASTROSAT CZTI

Data Quality Report

Orbit 40884

Creation date: 2024-06-27T22:21:45.208528
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_097T01_9000005574_40884cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40884cztM0_level2_quad_clean.evt
Size (bytes)382,671,36087,701,760
Size364.9 MB 83.6 MB
Events in quadrant A3,076,087589,145
Events in quadrant B4,422,539574,992
Events in quadrant C2,666,363585,870
Events in quadrant D3,574,629522,628

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124003
B0168522
C0112652
D0144062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5468170.310900%
B54685019.162399%
C5468180.329188%
D54681562.852963%

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 7170 5469 13 13 0.18% 0.24%
B 7170 5469 278 278 3.88% 5.08%
C 7170 5469 11 11 0.15% 0.20%
D 7170 5469 107 107 1.49% 1.96%

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 532484 4274.55 601 587 124.4
A 13 248 106654 852.4 601 587 124.4
A 12 189 74422 593.37 601 587 124.4
B 4 171 1822705 15987.66 585 569 114.0
B 5 255 221511 1938.57 585 569 114.0
B 0 230 15523 131.21 585 569 114.0
C 15 214 235847 1692.5 590 592 139.0
C 0 10 56735 403.91 590 592 139.0
C 5 10 23969 168.18 590 592 139.0
D 12 79 471527 3286.06 579 562 143.3
D 13 249 226035 1573.19 579 562 143.3
D 2 249 214844 1495.11 579 562 143.3

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