ASTROSAT CZTI

Data Quality Report

Orbit 20240803_A09_038T15_9000006362_level2

Creation date: 2024-08-06T09:18:32.758516
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/AS1A09_038T15_9000006362cztM0_level2.fits modeM0/AS1A09_038T15_9000006362cztM0_level2_quad_clean.evt
Size (bytes)72,429,120103,464,000
Size69.1 MB 98.7 MB
Events in quadrant A419,558666,666
Events in quadrant B412,778679,931
Events in quadrant C424,966662,374
Events in quadrant D338,744527,397

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314180
B0179630
C0188670
D0331860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85973033.524485%
B85951601.861547%
C85881021.187704%
D8593140116.303968%

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 8597 8597 0 0 0.00% 0.00%
B 8597 8595 0 0 0.00% 0.00%
C 8598 8592 0 0 0.00% 0.00%
D 8597 8569 0 0 0.00% 0.00%

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 14 188 502 12.9 109 102 31.0
A 14 204 402 9.67 109 102 31.0
A 7 110 347 7.9 109 102 31.0
B 2 9 387 11.71 109 103 24.3
B 2 8 309 8.49 109 103 24.3
B 5 128 307 8.41 109 103 24.3
C 1 80 348 7.97 112 104 30.6
C 1 81 342 7.78 112 104 30.6
C 3 202 334 7.52 112 104 30.6
D 15 63 269 6.35 96 87 28.7
D 15 47 264 6.18 96 87 28.7
D 6 79 256 5.9 96 87 28.7

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