ASTROSAT CZTI

Data Quality Report

Orbit 55547

Creation date: 2026-01-03T18:53:30.809851
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/AS1A14_021T06_9000006538_55547cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55547cztM0_level2_quad_clean.evt
Size (bytes)443,436,48087,220,800
Size422.9 MB 83.2 MB
Events in quadrant A2,859,360592,484
Events in quadrant B2,994,459639,029
Events in quadrant C3,110,725556,237
Events in quadrant D6,970,991424,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131921
B0133281
C0140251
D0251651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61511181.918387%
B61521001.625488%
C61521211.966840%
D6152141422.984395%

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 7236 6151 33 33 0.46% 0.54%
B 7237 6153 16 16 0.22% 0.26%
C 7237 6152 72 72 0.99% 1.17%
D 7237 6152 1262 1262 17.44% 20.51%

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 0 8 251200 1566.33 646 629 160.0
A 4 239 29793 182.31 646 629 160.0
A 15 32 20433 123.8 646 629 160.0
B 4 206 275399 2014.43 636 613 136.4
B 10 247 80198 583.43 636 613 136.4
B 4 169 52848 382.93 636 613 136.4
C 13 3 235028 1372.33 617 610 170.8
C 9 38 205555 1199.79 617 610 170.8
C 12 252 78330 454.99 617 610 170.8
D 11 129 4322921 27069.26 564 537 159.7
D 6 239 116046 723.38 564 537 159.7
D 8 160 74828 465.25 564 537 159.7

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