ASTROSAT CZTI

Data Quality Report

Orbit 53968

Creation date: 2025-09-19T13:31:12.139554
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/AS1A14_057T04_9000006508_53968cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53968cztM0_level2_quad_clean.evt
Size (bytes)530,712,000103,965,120
Size506.1 MB 99.1 MB
Events in quadrant A3,690,509694,550
Events in quadrant B3,977,782723,557
Events in quadrant C5,101,208626,652
Events in quadrant D6,303,789590,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163070
B0170360
C0204460
D0239580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7367931.262386%
B73682823.827362%
C73674746.434098%
D73676538.863852%

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 7367 7367 23 23 0.31% 0.31%
B 7368 7368 75 75 1.02% 1.02%
C 7367 7367 164 164 2.23% 2.23%
D 7367 7367 474 474 6.43% 6.43%

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 17 197753 980.53 814 791 200.9
A 7 14 81806 403.32 814 791 200.9
A 15 174 60905 299.26 814 791 200.9
B 5 185 202343 1171.48 802 772 172.1
B 5 250 147678 853.78 802 772 172.1
B 0 213 112127 647.16 802 772 172.1
C 9 38 886699 4164.13 779 774 212.8
C 4 5 789753 3708.45 779 774 212.8
C 12 2 151913 710.4 779 774 212.8
D 8 176 1599486 7455.96 763 731 214.4
D 6 239 789196 3677.09 763 731 214.4
D 2 172 535368 2493.34 763 731 214.4

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