ASTROSAT CZTI

Data Quality Report

Orbit 18318

Creation date: 2024-06-27T17:48:16.715984
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/AS1A06_006T01_9000002720_18318cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18318cztM0_level2_quad_clean.evt
Size (bytes)935,873,280162,587,520
Size892.5 MB 155.1 MB
Events in quadrant A5,878,5741,036,584
Events in quadrant B6,399,0471,035,335
Events in quadrant C5,959,6911,013,825
Events in quadrant D9,245,126958,906

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260463
B0272983
C0261103
D0358453

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12731510.400597%
B127311080.848323%
C12731910.714791%
D127316024.728615%

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 14066 12733 0 0 0.00% 0.00%
B 14066 12733 16 16 0.11% 0.13%
C 14066 12733 3 3 0.02% 0.02%
D 14066 12733 578 578 4.11% 4.54%

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 15 174 30686 94.12 1521 1485 310.3
A 0 226 13565 38.93 1521 1485 310.3
A 12 194 11248 31.47 1521 1485 310.3
B 7 220 132845 451.84 1519 1481 290.7
B 0 197 80800 272.82 1519 1481 290.7
B 5 172 78573 265.16 1519 1481 290.7
C 14 238 222636 648.72 1454 1467 340.9
C 0 207 34000 95.42 1454 1467 340.9
C 3 233 21536 58.87 1454 1467 340.9
D 7 238 1753435 4946.29 1450 1410 354.2
D 13 168 618630 1742.53 1450 1410 354.2
D 7 38 536503 1510.67 1450 1410 354.2

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