ASTROSAT CZTI

Data Quality Report

Orbit 51381

Creation date: 2025-03-29T06:01:15.517675
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/AS1C07_001T03_9000006456_51381cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51381cztM0_level2_quad_clean.evt
Size (bytes)298,814,40024,416,640
Size285.0 MB 23.3 MB
Events in quadrant A2,974,269132,374
Events in quadrant B1,879,260166,886
Events in quadrant C4,049,942117,745
Events in quadrant D1,958,410139,497

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0595
B0595
C0639
D0586

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011488830
B07777463
C0148871170
D08142528

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145
B0101
C0178
D0101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A254832812.872841%
B25541054.111198%
C2542110043.273013%
D2547833.258736%

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 4521 2561 246 246 5.44% 9.61%
B 4524 2572 49 49 1.08% 1.91%
C 4525 2552 986 986 21.79% 38.64%
D 4526 2564 91 91 2.01% 3.55%

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 12 3 975284 14974.43 262 255 65.1
A 15 174 492256 7556.12 262 255 65.1
A 12 250 115930 1776.53 262 255 65.1
B 10 254 282799 4696.98 276 267 60.2
B 5 185 82396 1365.36 276 267 60.2
B 4 206 81133 1344.36 276 267 60.2
C 15 179 1963540 30462.0 227 224 64.5
C 4 12 486499 7544.84 227 224 64.5
C 10 171 312824 4850.17 227 224 64.5
D 11 176 588889 7789.5 267 256 75.6
D 2 216 102205 1349.11 267 256 75.6
D 3 12 71301 940.15 267 256 75.6

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