ASTROSAT CZTI

Data Quality Report

Orbit 20210828_C06_010T03_9000004676_level2

Creation date: 2025-12-28T10:15:51.209392
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/AS1C06_010T03_9000004676cztM0_level2.fits modeM0/AS1C06_010T03_9000004676cztM0_level2_quad_clean.evt
Size (bytes)584,470,080678,954,240
Size557.4 MB 647.5 MB
Events in quadrant A3,717,0804,425,287
Events in quadrant B3,385,8404,269,341
Events in quadrant C3,444,6364,044,797
Events in quadrant D3,074,2403,745,324

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012120
B012120
C012120
D012120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01225350
B01889150
C01492340
D01525560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594383810.641004%
B5943821643.640769%
C5943822283.748444%
D5943822163.728255%

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 69742 59429 0 0 0.00% 0.00%
B 69743 59407 0 0 0.00% 0.00%
C 69742 59404 0 0 0.00% 0.00%
D 69742 59369 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 3613 11.36 968 915 237.5
A 7 110 2906 8.38 968 915 237.5
A 0 30 2866 8.22 968 915 237.5
B 2 9 2699 10.51 898 865 174.6
B 3 80 2327 8.38 898 865 174.6
B 5 128 2296 8.2 898 865 174.6
C 1 81 2725 8.05 911 856 232.3
C 1 80 2704 7.96 911 856 232.3
C 12 241 2440 6.82 911 856 232.3
D 6 67 2284 6.31 880 804 234.4
D 10 189 2236 6.11 880 804 234.4
D 7 3 2227 6.07 880 804 234.4

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