ASTROSAT CZTI

Data Quality Report

Orbit 23196

Creation date: 2024-06-27T18:51:09.421301
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/AS1T03_175T01_9000003428_23196cztM0_level2.evt modeM0/AS1T03_175T01_9000003428_23196cztM0_level2_quad_clean.evt
Size (bytes)879,258,240168,906,240
Size838.5 MB 161.1 MB
Events in quadrant A5,914,4761,061,991
Events in quadrant B6,002,3381,086,981
Events in quadrant C6,517,2501,047,540
Events in quadrant D7,319,9301,026,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262222
B0263052
C0274733
D0309812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12913860.665996%
B129131180.913808%
C129131951.510106%
D129133282.540076%

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 14063 12914 0 0 0.00% 0.00%
B 14063 12915 2 2 0.01% 0.02%
C 14063 12915 14 14 0.10% 0.11%
D 14063 12915 202 202 1.44% 1.56%

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 18361 54.4 1533 1496 310.0
A 3 137 13992 40.31 1533 1496 310.0
A 0 226 13116 37.48 1533 1496 310.0
B 12 111 37121 122.07 1526 1484 291.9
B 11 111 33025 108.04 1526 1484 291.9
B 14 111 29546 96.12 1526 1484 291.9
C 0 10 267745 773.82 1468 1477 344.1
C 7 247 264560 764.56 1468 1477 344.1
C 14 238 230472 665.5 1468 1477 344.1
D 1 52 1277568 3494.39 1483 1441 365.2
D 13 153 284704 775.65 1483 1441 365.2
D 7 238 111487 301.34 1483 1441 365.2

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