ASTROSAT CZTI

Data Quality Report

Orbit 21980

Creation date: 2024-06-27T18:34:50.935874
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/AS1A07_094T01_9000003248_21980cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21980cztM0_level2_quad_clean.evt
Size (bytes)855,357,120144,627,840
Size815.7 MB 137.9 MB
Events in quadrant A5,410,178915,966
Events in quadrant B6,218,574920,702
Events in quadrant C5,451,388887,840
Events in quadrant D8,039,314852,781

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236192
B0258672
C0236252
D0318872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11612390.335859%
B116122161.860145%
C11611890.766515%
D116114063.496684%

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 12832 11612 0 0 0.00% 0.00%
B 12832 11613 129 129 1.01% 1.11%
C 12831 11613 0 0 0.00% 0.00%
D 12831 11613 323 323 2.52% 2.78%

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 13 254 20846 68.68 1398 1368 283.6
A 3 137 11899 37.14 1398 1368 283.6
A 0 226 11880 37.07 1398 1368 283.6
B 3 64 554438 2063.68 1387 1350 268.0
B 0 230 91146 335.05 1387 1350 268.0
B 0 190 72516 265.53 1387 1350 268.0
C 14 238 211927 666.42 1341 1343 316.0
C 13 61 9241 24.99 1341 1343 316.0
C 10 91 4849 11.09 1341 1343 316.0
D 7 238 2083492 6334.83 1345 1307 328.7
D 1 52 278585 843.59 1345 1307 328.7
D 13 172 165754 500.31 1345 1307 328.7

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