ASTROSAT CZTI

Data Quality Report

Orbit 56727

Creation date: 2026-03-24T14:04:39.489932
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/AS1A14_083T05_9000006560_56727cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56727cztM0_level2_quad_clean.evt
Size (bytes)1,282,121,280221,762,880
Size1.2 GB 211.5 MB
Events in quadrant A14,630,3501,321,133
Events in quadrant B8,594,8701,650,194
Events in quadrant C14,480,1931,256,550
Events in quadrant D8,501,4471,369,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05435610
B0374933
C0548503
D0371913

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16196217713.441591%
B161993522.172974%
C16199228714.118155%
D161982151.327324%

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 19313 16200 1955 1955 10.12% 12.07%
B 19314 16202 146 146 0.76% 0.90%
C 19314 16201 2162 2162 11.19% 13.34%
D 19313 16201 200 200 1.04% 1.23%

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 10 251 5711945 14079.71 1635 1595 405.6
A 3 14 1658283 4084.81 1635 1595 405.6
A 3 62 822130 2023.15 1635 1595 405.6
B 5 185 506159 1382.99 1716 1654 364.8
B 10 247 478300 1306.62 1716 1654 364.8
B 4 206 292946 798.51 1716 1654 364.8
C 15 230 5673339 13318.66 1555 1541 425.9
C 13 3 1347417 3160.42 1555 1541 425.9
C 12 249 454291 1063.16 1555 1541 425.9
D 2 249 785260 1668.82 1654 1574 469.6
D 2 252 255264 540.22 1654 1574 469.6
D 2 207 239417 506.47 1654 1574 469.6

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