ASTROSAT CZTI

Data Quality Report

Orbit 53925

Creation date: 2025-09-16T13:14:16.379612
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_53925cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53925cztM0_level2_quad_clean.evt
Size (bytes)730,134,720118,117,440
Size696.3 MB 112.6 MB
Events in quadrant A4,586,095812,912
Events in quadrant B4,642,606841,263
Events in quadrant C5,941,045747,249
Events in quadrant D11,177,636566,784

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196921
B0200041
C0239991
D0393211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87603183.630137%
B87615506.277822%
C87617248.263897%
D8760239927.385845%

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 8875 8760 85 85 0.96% 0.97%
B 8876 8761 155 155 1.75% 1.77%
C 8876 8761 583 583 6.57% 6.65%
D 8875 8760 2251 2251 25.36% 25.70%

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 8 273077 1138.15 992 966 239.1
A 15 174 196263 816.86 992 966 239.1
A 7 14 39031 159.21 992 966 239.1
B 5 236 437715 2133.05 967 933 204.8
B 0 213 88733 428.78 967 933 204.8
B 0 153 57045 274.03 967 933 204.8
C 9 53 1047374 4013.47 950 942 260.7
C 1 241 692375 2651.91 950 942 260.7
C 13 3 221633 846.44 950 942 260.7
D 8 176 6034490 25764.68 840 804 234.2
D 3 12 1080559 4610.7 840 804 234.2
D 6 239 320642 1365.75 840 804 234.2

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