ASTROSAT CZTI

Data Quality Report

Orbit 38971

Creation date: 2024-06-27T21:58:49.160728
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_057T01_9000005418_38971cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38971cztM0_level2_quad_clean.evt
Size (bytes)292,230,72089,835,840
Size278.7 MB 85.7 MB
Events in quadrant A2,679,680600,671
Events in quadrant B2,438,924618,886
Events in quadrant C2,533,458597,262
Events in quadrant D2,769,099547,758

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111813
B0106982
C0106702
D0117872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5081420.826609%
B5081300.590435%
C508170.137768%
D5081601.180870%

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 7114 5082 28 28 0.39% 0.55%
B 7114 5082 16 16 0.22% 0.31%
C 7114 5082 3 3 0.04% 0.06%
D 7114 5082 65 65 0.91% 1.28%

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 399680 3511.96 562 552 113.6
A 13 248 91139 797.08 562 552 113.6
A 13 6 9203 76.12 562 552 113.6
B 5 172 170952 1565.61 564 548 108.8
B 0 230 37553 339.99 564 548 108.8
B 12 111 13412 118.19 564 548 108.8
C 15 214 224020 1719.34 557 561 130.0
C 15 208 125152 958.63 557 561 130.0
C 0 10 6742 47.56 557 561 130.0
D 12 227 197226 1467.92 548 534 134.0
D 12 6 152187 1131.79 548 534 134.0
D 2 249 87744 650.85 548 534 134.0

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