ASTROSAT CZTI

Data Quality Report

Orbit 50574

Creation date: 2025-02-02T22:48:30.407218
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/AS1T05_239T01_9000006444_50574cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50574cztM0_level2_quad_clean.evt
Size (bytes)2,450,183,040215,936,640
Size2.3 GB 205.9 MB
Events in quadrant A13,064,8831,676,790
Events in quadrant B15,436,2151,745,047
Events in quadrant C32,864,332717,020
Events in quadrant D27,890,2041,106,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510252
B0588852
C01105022
D0959112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187407874.199573%
B1874113927.427565%
C187411127060.135532%
D18740540828.858058%

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 19600 18742 468 468 2.39% 2.50%
B 19601 18743 838 838 4.28% 4.47%
C 19601 18743 8726 8726 44.52% 46.56%
D 19600 18742 5479 5479 27.95% 29.23%

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 12 80 1068370 2205.78 1972 1922 483.5
A 12 250 926643 1912.64 1972 1922 483.5
A 4 3 730484 1506.92 1972 1922 483.5
B 4 170 4373435 10614.13 1941 1873 411.9
B 0 229 899207 2178.72 1941 1873 411.9
B 5 185 416384 1006.43 1941 1873 411.9
C 15 214 9462297 26127.39 1288 1280 362.1
C 15 196 4405180 12161.74 1288 1280 362.1
C 15 195 1932597 5333.49 1288 1280 362.1
D 7 61 9063370 18652.99 1727 1662 485.8
D 7 60 2487646 5117.25 1727 1662 485.8
D 8 246 1433039 2946.41 1727 1662 485.8

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