ASTROSAT CZTI

Data Quality Report

Orbit 33591

Creation date: 2024-06-27T20:50:31.969644
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_060T01_9000004808_33591cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33591cztM0_level2_quad_clean.evt
Size (bytes)1,435,933,440210,424,320
Size1.3 GB 200.7 MB
Events in quadrant A11,696,9971,317,528
Events in quadrant B11,149,7321,359,623
Events in quadrant C8,423,5181,406,614
Events in quadrant D11,280,4681,327,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440294
B0424123
C0337973
D0433723

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13918187613.478948%
B13918145610.461273%
C139181631.171145%
D139188045.776692%

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 18216 13921 1615 1615 8.87% 11.60%
B 18216 13920 1118 1118 6.14% 8.03%
C 18216 13921 143 143 0.79% 1.03%
D 18216 13921 778 778 4.27% 5.59%

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 15 169 5715516 18560.29 1533 1507 307.9
A 12 16 38276 119.43 1533 1507 307.9
A 13 254 22239 67.34 1533 1507 307.9
B 5 172 2902268 9700.38 1543 1499 299.0
B 15 222 1737681 5805.92 1543 1499 299.0
B 0 190 123696 408.64 1543 1499 299.0
C 3 233 1226517 3403.19 1559 1570 359.9
C 15 214 586371 1624.71 1559 1570 359.9
C 0 10 337734 933.94 1559 1570 359.9
D 2 250 2380828 6238.42 1540 1498 381.4
D 8 195 1313123 3438.98 1540 1498 381.4
D 14 34 555565 1452.72 1540 1498 381.4

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