ASTROSAT CZTI

Data Quality Report

Orbit 51173

Creation date: 2025-03-15T15:24:14.293507
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_001T01_9000006454_51173cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51173cztM0_level2_quad_clean.evt
Size (bytes)891,204,48076,573,440
Size849.9 MB 73.0 MB
Events in quadrant A12,049,322308,255
Events in quadrant B4,349,077634,358
Events in quadrant C11,196,405402,404
Events in quadrant D4,900,979527,174

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401362
B0174682
C0377344
D0192002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6392355555.616395%
B63933245.068043%
C6392231936.279725%
D63924396.867960%

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 7437 6393 3454 3454 46.44% 54.03%
B 7438 6394 192 192 2.58% 3.00%
C 7437 6393 2494 2494 33.54% 39.01%
D 7437 6393 447 447 6.01% 6.99%

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 4 207 6027415 49558.71 485 471 121.6
A 4 4 1420510 11676.78 485 471 121.6
A 12 3 791840 6507.32 485 471 121.6
B 8 128 630862 4552.13 653 630 138.4
B 5 185 304777 2196.84 653 630 138.4
B 0 171 150702 1083.96 653 630 138.4
C 12 247 5098263 35230.91 520 513 144.7
C 4 12 3155328 21803.15 520 513 144.7
C 13 3 285321 1968.33 520 513 144.7
D 7 96 579565 3316.11 623 602 174.6
D 2 62 358032 2047.24 623 602 174.6
D 2 216 262655 1500.95 623 602 174.6

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