ASTROSAT CZTI

Data Quality Report

Orbit 41738

Creation date: 2024-06-27T22:32:17.004351
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_077T11_9000005696_41738cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41738cztM0_level2_quad_clean.evt
Size (bytes)975,893,760219,035,520
Size930.7 MB 208.9 MB
Events in quadrant A7,316,9521,519,797
Events in quadrant B6,182,1911,554,625
Events in quadrant C7,781,5051,401,947
Events in quadrant D13,835,2161,255,392

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293394
B0270734
C0306654
D0501616

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13042380.291366%
B13042290.222359%
C130425093.902776%
D1304112979.945556%

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 38416 13043 9 9 0.02% 0.07%
B 38416 13043 12 12 0.03% 0.09%
C 38416 13042 486 486 1.27% 3.73%
D 38416 13042 1491 1491 3.88% 11.43%

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 1273087 4196.73 1487 1457 303.0
A 15 223 214996 704.74 1487 1457 303.0
A 3 1 51434 164.94 1487 1457 303.0
B 0 186 188412 662.22 1468 1429 282.4
B 15 32 100335 350.29 1468 1429 282.4
B 0 245 40702 139.09 1468 1429 282.4
C 0 10 1764775 5454.06 1394 1405 323.3
C 15 214 514996 1588.52 1394 1405 323.3
C 3 233 38832 115.76 1394 1405 323.3
D 12 79 5588966 16472.54 1399 1365 339.2
D 2 249 1149696 3385.34 1399 1365 339.2
D 13 249 957537 2818.85 1399 1365 339.2

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