ASTROSAT CZTI

Data Quality Report

Orbit 36946

Creation date: 2024-06-27T21:33:27.117648
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/AS1A11_024T01_9000005250_36946cztM0_level2.evt modeM0/AS1A11_024T01_9000005250_36946cztM0_level2_quad_clean.evt
Size (bytes)1,138,622,400144,264,960
Size1.1 GB 137.6 MB
Events in quadrant A6,747,552861,871
Events in quadrant B9,849,762856,913
Events in quadrant C7,765,796861,970
Events in quadrant D9,171,258817,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290704
B0387423
C0316993
D0370473

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14047310.220688%
B140476474.605966%
C140471861.324126%
D140475694.050687%

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 19035 14050 18 18 0.09% 0.13%
B 19035 14050 437 437 2.30% 3.11%
C 19035 14050 149 149 0.78% 1.06%
D 19035 14050 507 507 2.66% 3.61%

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 481203 1502.73 1583 1554 319.2
A 15 237 53397 162.42 1583 1554 319.2
A 9 143 31025 92.33 1583 1554 319.2
B 5 184 2214530 7419.56 1558 1517 298.3
B 5 172 409091 1366.47 1558 1517 298.3
B 0 213 303822 1013.54 1558 1517 298.3
C 14 254 748157 2067.91 1540 1548 361.0
C 15 214 586085 1619.01 1540 1548 361.0
C 0 10 389582 1074.75 1540 1548 361.0
D 2 250 1279037 3486.42 1515 1473 366.4
D 2 153 589771 1605.44 1515 1473 366.4
D 13 249 499225 1358.34 1515 1473 366.4

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