ASTROSAT CZTI

Data Quality Report

Orbit 20384

Creation date: 2024-06-27T18:14:42.894777
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/AS1A05_205T01_9000003012_20384cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20384cztM0_level2_quad_clean.evt
Size (bytes)853,672,320143,801,280
Size814.1 MB 137.1 MB
Events in quadrant A5,969,796885,182
Events in quadrant B6,642,464888,434
Events in quadrant C6,082,341861,924
Events in quadrant D6,303,598846,449

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261342
B0277644
C0261822
D0275802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126342031.606775%
B126334023.182142%
C126342872.271648%
D126342752.176666%

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 13559 12636 1 1 0.01% 0.01%
B 13559 12636 82 82 0.60% 0.65%
C 13559 12636 0 0 0.00% 0.00%
D 13559 12636 81 81 0.60% 0.64%

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 5 16 27030 82.32 1539 1508 310.0
A 0 226 13335 38.15 1539 1508 310.0
A 3 137 13040 37.2 1539 1508 310.0
B 7 220 469197 1594.41 1533 1493 293.3
B 0 198 51595 170.8 1533 1493 293.3
B 12 111 35929 117.39 1533 1493 293.3
C 14 238 230093 656.29 1483 1489 348.3
C 3 233 42723 118.38 1483 1489 348.3
C 8 128 14995 38.77 1483 1489 348.3
D 1 52 494015 1343.94 1502 1457 366.5
D 2 234 60834 162.01 1502 1457 366.5
D 13 153 35426 92.68 1502 1457 366.5

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