ASTROSAT CZTI

Data Quality Report

Orbit 51467

Creation date: 2025-04-04T15:23:59.606182
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_090T01_9000006458_51467cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51467cztM0_level2_quad_clean.evt
Size (bytes)854,988,48080,150,400
Size815.4 MB 76.4 MB
Events in quadrant A5,604,448602,768
Events in quadrant B6,980,810637,520
Events in quadrant C3,737,416609,957
Events in quadrant D14,822,704122,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210862
B0252042
C0156182
D0485534

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65015608.614059%
B650187813.505615%
C65011942.984156%
D6500529181.400000%

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 7596 6502 435 435 5.73% 6.69%
B 7596 6502 717 717 9.44% 11.03%
C 7596 6502 117 117 1.54% 1.80%
D 7595 6500 4422 4422 58.22% 68.03%

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 8 249 682838 3917.9 713 697 174.1
A 4 175 680592 3905.0 713 697 174.1
A 12 3 603340 3461.3 713 697 174.1
B 10 254 3107876 20495.8 707 683 151.6
B 4 206 352911 2323.38 707 683 151.6
B 0 197 104870 687.24 707 683 151.6
C 13 3 288845 1498.44 702 698 192.3
C 15 219 206343 1069.41 702 698 192.3
C 10 19 90399 466.47 702 698 192.3
D 8 176 12644038 140142.99 314 303 90.2
D 6 42 390408 4323.92 314 303 90.2
D 3 12 179209 1982.99 314 303 90.2

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