ASTROSAT CZTI

Data Quality Report

Orbit 54627

Creation date: 2025-11-02T20:22:10.363513
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_066T07_9000006522_54627cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54627cztM0_level2_quad_clean.evt
Size (bytes)1,041,068,160219,582,720
Size992.8 MB 209.4 MB
Events in quadrant A10,282,9121,401,745
Events in quadrant B7,315,1771,561,484
Events in quadrant C9,879,5981,354,224
Events in quadrant D9,827,8311,234,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417535
B0333764
C0408214
D0403304

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1588511287.101039%
B158873882.442248%
C158877724.859319%
D158879616.048971%

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 17341 15890 741 741 4.27% 4.66%
B 17342 15891 35 35 0.20% 0.22%
C 17342 15891 488 488 2.81% 3.07%
D 17342 15891 693 693 4.00% 4.36%

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 7 190 1075297 2557.88 1715 1671 419.7
A 7 14 729584 1734.23 1715 1671 419.7
A 0 8 648408 1540.83 1715 1671 419.7
B 1 207 119089 316.96 1723 1655 370.5
B 5 172 71643 188.9 1723 1655 370.5
B 10 247 70585 186.05 1723 1655 370.5
C 13 3 1095780 2380.69 1675 1662 459.6
C 4 5 1060178 2303.22 1675 1662 459.6
C 15 157 283726 613.74 1675 1662 459.6
D 8 240 794090 1686.61 1671 1604 469.9
D 8 160 742189 1576.15 1671 1604 469.9
D 2 249 627314 1331.67 1671 1604 469.9

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