ASTROSAT CZTI

Data Quality Report

Orbit 51247

Creation date: 2025-03-20T09:57:44.632916
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_51247cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51247cztM0_level2_quad_clean.evt
Size (bytes)646,482,24088,272,000
Size616.5 MB 84.2 MB
Events in quadrant A5,329,705612,835
Events in quadrant B3,760,985668,229
Events in quadrant C9,835,148400,479
Events in quadrant D4,514,653549,575

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203312
B0156392
C0337032
D0179302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63281552.449431%
B63282483.919090%
C6328245138.732617%
D63283305.214918%

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 7483 6329 103 103 1.38% 1.63%
B 7483 6329 123 123 1.64% 1.94%
C 7483 6329 2183 2183 29.17% 34.49%
D 7483 6328 248 248 3.31% 3.92%

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 1902435 11411.58 671 656 166.7
A 12 194 219099 1310.76 671 656 166.7
A 5 240 90444 538.77 671 656 166.7
B 7 252 276070 1930.84 671 648 142.6
B 5 172 173081 1208.84 671 648 142.6
B 8 128 162263 1133.0 671 648 142.6
C 4 12 7144193 48048.4 539 536 148.7
C 13 3 116059 777.01 539 536 148.7
C 12 247 102658 686.87 539 536 148.7
D 8 176 485936 2667.84 646 624 181.9
D 2 216 323604 1775.48 646 624 181.9
D 3 12 258655 1418.44 646 624 181.9

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