ASTROSAT CZTI

Data Quality Report

Orbit 43634

Creation date: 2024-06-27T22:53:55.400792
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/AS1A12_068T05_9000005894_43634cztM0_level2.fits modeM0/AS1A12_068T05_9000005894_43634cztM0_level2_quad_clean.evt
Size (bytes)898,030,08094,970,880
Size856.4 MB 90.6 MB
Events in quadrant A4,812,397711,786
Events in quadrant B5,310,340732,507
Events in quadrant C13,333,640446,922
Events in quadrant D9,317,239557,755

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186931
B0199892
C0437831
D0319681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60695939.770967%
B60684347.152274%
C6068438372.231378%
D6068203033.454186%

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 7229 6069 358 358 4.95% 5.90%
B 7228 6068 233 233 3.22% 3.84%
C 7228 6068 4288 4288 59.32% 70.67%
D 7228 6068 1768 1768 24.46% 29.14%

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 15 223 1155554 8168.57 691 677 141.4
A 10 83 739632 5226.71 691 677 141.4
A 8 4 56534 395.08 691 677 141.4
B 4 206 1691465 12875.48 694 675 131.3
B 5 235 553439 4209.33 694 675 131.3
B 12 32 82375 622.15 694 675 131.3
C 15 142 7785751 74265.52 445 447 104.8
C 15 174 1598345 15242.66 445 447 104.8
C 3 233 1359146 12960.89 445 447 104.8
D 12 6 1052364 6699.55 612 593 157.0
D 1 52 733091 4665.85 612 593 157.0
D 2 249 730058 4646.53 612 593 157.0

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