ASTROSAT CZTI

Data Quality Report

Orbit 54075

Creation date: 2025-09-26T16:57:43.496793
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_041T01_9000006510_54075cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54075cztM0_level2_quad_clean.evt
Size (bytes)1,555,496,640227,309,760
Size1.4 GB 216.8 MB
Events in quadrant A9,362,4311,587,649
Events in quadrant B11,231,0851,689,245
Events in quadrant C12,158,5501,423,194
Events in quadrant D23,460,108963,759

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0406524
B0459286
C0492663
D0819353

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176715923.350122%
B1767010886.157329%
C1767215258.629470%
D17672572032.367587%

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 19236 17673 352 352 1.83% 1.99%
B 19236 17672 674 674 3.50% 3.81%
C 19236 17673 1359 1359 7.06% 7.69%
D 19236 17673 5440 5440 28.28% 30.78%

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 15 174 1505752 3278.85 1858 1808 458.7
A 3 14 268804 582.1 1858 1808 458.7
A 0 8 115032 246.85 1858 1808 458.7
B 5 236 1975765 5092.87 1828 1761 387.6
B 10 28 486731 1251.21 1828 1761 387.6
B 5 185 396299 1017.9 1828 1761 387.6
C 15 233 3893665 8022.53 1754 1733 485.1
C 1 241 503538 1034.38 1754 1733 485.1
C 9 38 230265 471.08 1754 1733 485.1
D 8 176 7825337 17886.16 1527 1459 437.4
D 2 172 5586662 12768.33 1527 1459 437.4
D 2 165 2307888 5272.73 1527 1459 437.4

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