ASTROSAT CZTI

Data Quality Report

Orbit 44042

Creation date: 2024-06-27T22:58:39.437823
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/AS1A13_025T01_9000005936_44042cztM0_level2.fits modeM0/AS1A13_025T01_9000005936_44042cztM0_level2_quad_clean.evt
Size (bytes)592,597,440112,155,840
Size565.1 MB 107.0 MB
Events in quadrant A8,172,388649,365
Events in quadrant B3,465,257807,380
Events in quadrant C3,480,785785,301
Events in quadrant D6,253,274646,991

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292283
B0152803
C0155473
D0237433

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7270151520.839065%
B7270791.086657%
C7270550.756534%
D727084011.554333%

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 7970 7272 1111 1111 13.94% 15.28%
B 7970 7272 10 10 0.13% 0.14%
C 7970 7272 31 31 0.39% 0.43%
D 7970 7272 650 650 8.16% 8.94%

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 15 222 3909243 25170.04 746 731 155.3
A 10 83 1266013 8148.16 746 731 155.3
A 14 238 89006 568.47 746 731 155.3
B 0 200 65963 400.63 822 797 162.7
B 4 171 43657 263.5 822 797 162.7
B 5 172 32282 193.57 822 797 162.7
C 14 254 250786 1307.63 810 814 191.2
C 3 233 54365 280.13 810 814 191.2
C 5 250 13981 68.88 810 814 191.2
D 5 235 1716564 8727.19 770 744 196.6
D 1 52 529093 2687.35 770 744 196.6
D 12 233 419186 2128.32 770 744 196.6

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