ASTROSAT CZTI

Data Quality Report

Orbit 20170704_G07_049T02_9000001354_level2

Creation date: 2025-11-14T23:04:48.145452
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/AS1G07_049T02_9000001354cztM0_level2.fits modeM0/AS1G07_049T02_9000001354cztM0_level2_quad_clean.evt
Size (bytes)330,016,320385,663,680
Size314.7 MB 367.8 MB
Events in quadrant A1,719,7102,293,998
Events in quadrant B3,082,9483,094,817
Events in quadrant C1,687,8982,213,061
Events in quadrant D1,468,2842,042,783

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05960
B06000
C06000
D06020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0530
C0530
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0618360
B0637630
C0606100
D0684790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A296322290.772813%
B296323271.103537%
C296381970.664687%
D296514481.510910%

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 34876 29755 0 0 0.00% 0.00%
B 34876 29763 0 0 0.00% 0.00%
C 34876 29762 0 0 0.00% 0.00%
D 34876 29714 0 0 0.00% 0.00%

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 0 29 1695 11.31 447 422 112.6
A 7 110 1374 8.46 447 422 112.6
A 0 30 1320 7.98 447 422 112.6
B 5 252 1572 5.54 825 801 139.2
B 2 9 1549 5.38 825 801 139.2
B 5 232 1525 5.2 825 801 139.2
C 1 80 1309 7.7 445 416 116.0
C 1 81 1224 6.97 445 416 116.0
C 12 241 1198 6.74 445 416 116.0
D 3 14 1107 6.46 417 382 112.2
D 6 231 1054 5.99 417 382 112.2
D 6 83 1043 5.89 417 382 112.2

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