ASTROSAT CZTI

Data Quality Report

Orbit 59266

Creation date: 2026-09-10T21:13:35.243599
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/AS1T05_271T01_9000006604_59266cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59266cztM0_level2_quad_clean.evt
Size (bytes)573,379,20096,644,160
Size546.8 MB 92.2 MB
Events in quadrant A3,394,571672,141
Events in quadrant B3,520,457712,281
Events in quadrant C3,329,218641,013
Events in quadrant D10,455,738430,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146652
B0151722
C0145032
D0357535

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67491742.578160%
B67502934.340741%
C67501512.237037%
D6749238835.383020%

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 8689 6751 19 19 0.22% 0.28%
B 8690 6752 69 69 0.79% 1.02%
C 8690 6752 12 12 0.14% 0.18%
D 8689 6751 1982 1982 22.81% 29.36%

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 3 14 156625 815.19 783 763 191.2
A 0 24 93045 482.65 783 763 191.2
A 10 251 84804 439.55 783 763 191.2
B 4 201 187380 1131.35 768 737 165.0
B 4 236 182740 1103.22 768 737 165.0
B 10 247 27181 160.29 768 737 165.0
C 3 233 157526 746.35 766 758 210.0
C 12 252 82515 389.23 766 758 210.0
C 14 254 54536 256.03 766 758 210.0
D 11 129 4146002 22154.54 665 637 187.1
D 12 110 2186851 11684.03 665 637 187.1
D 2 249 1367133 7303.12 665 637 187.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct