ASTROSAT CZTI

Data Quality Report

Orbit 40342

Creation date: 2024-06-27T22:15:05.388057
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/AS1A12_056T02_9000005538_40342cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40342cztM0_level2_quad_clean.evt
Size (bytes)894,720,960236,208,960
Size853.3 MB 225.3 MB
Events in quadrant A8,034,8781,588,543
Events in quadrant B6,427,2181,648,307
Events in quadrant C6,675,8041,588,707
Events in quadrant D10,898,0651,360,677

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320674
B0283913
C0284243
D0420443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139881651.179582%
B13988140.100086%
C13988160.114384%
D1398811458.185588%

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 19066 13991 130 130 0.68% 0.93%
B 19066 13991 3 3 0.02% 0.02%
C 19066 13991 6 6 0.03% 0.04%
D 19066 13991 1175 1175 6.16% 8.40%

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 10 83 1068385 3345.43 1571 1539 318.9
A 13 248 538569 1684.03 1571 1539 318.9
A 12 189 150681 467.68 1571 1539 318.9
B 0 230 122020 404.34 1562 1518 298.0
B 5 255 55490 181.1 1562 1518 298.0
B 0 245 42167 136.4 1562 1518 298.0
C 15 214 630674 1780.39 1533 1547 353.4
C 14 254 30377 81.59 1533 1547 353.4
C 0 10 20387 53.32 1533 1547 353.4
D 12 227 3171101 8724.12 1486 1448 363.3
D 12 233 879785 2417.52 1486 1448 363.3
D 12 128 455066 1248.53 1486 1448 363.3

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