ASTROSAT CZTI

Data Quality Report

Orbit 41081

Creation date: 2024-06-27T22:24:12.251917
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_095T02_9000005596_41081cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41081cztM0_level2_quad_clean.evt
Size (bytes)360,167,04093,084,480
Size343.5 MB 88.8 MB
Events in quadrant A3,044,722635,496
Events in quadrant B3,761,812636,724
Events in quadrant C2,923,991609,318
Events in quadrant D3,187,455564,039

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122153
B0145732
C0118012
D0129182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5325190.356808%
B53252093.924883%
C5325260.488263%
D5325651.220657%

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 7178 5326 4 4 0.06% 0.08%
B 7178 5326 196 196 2.73% 3.68%
C 7178 5326 19 19 0.26% 0.36%
D 7178 5326 55 55 0.77% 1.03%

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 10 83 543259 4258.98 626 615 127.4
A 12 189 38166 294.72 626 615 127.4
A 13 248 33530 258.34 626 615 127.4
B 0 186 1261060 10695.5 611 596 117.8
B 5 255 77092 649.1 611 596 117.8
B 12 111 14737 119.99 611 596 117.8
C 14 254 256822 1846.08 599 603 138.8
C 15 214 228216 1639.97 599 603 138.8
C 0 10 64519 460.52 599 603 138.8
D 2 249 260002 1763.24 603 589 147.1
D 12 79 155186 1050.8 603 589 147.1
D 13 249 105695 714.41 603 589 147.1

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