ASTROSAT CZTI

Data Quality Report

Orbit 58801

Creation date: 2026-08-10T14:13:42.095506
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_106T01_9000006596_58801cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58801cztM0_level2_quad_clean.evt
Size (bytes)652,579,20094,207,680
Size622.3 MB 89.8 MB
Events in quadrant A3,860,211680,682
Events in quadrant B4,149,551713,602
Events in quadrant C3,811,765634,900
Events in quadrant D11,808,031350,401

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159112
B0167662
C0161792
D0397668

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67821702.506635%
B67833815.616984%
C67832824.157452%
D6782325147.935712%

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 8862 6783 48 48 0.54% 0.71%
B 8863 6784 206 206 2.32% 3.04%
C 8863 6784 209 209 2.36% 3.08%
D 8861 6781 3096 3096 34.94% 45.66%

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 13 248 266813 1356.58 791 771 196.1
A 7 64 229860 1168.16 791 771 196.1
A 15 233 95252 481.77 791 771 196.1
B 4 236 497030 2991.19 773 744 165.9
B 8 234 160811 964.75 773 744 165.9
B 10 247 123440 739.51 773 744 165.9
C 15 198 486876 2369.53 748 743 205.2
C 13 3 315326 1533.35 748 743 205.2
C 12 252 27628 131.04 748 743 205.2
D 12 110 6890581 38300.82 621 591 179.9
D 11 129 1802319 10015.64 621 591 179.9
D 2 249 409649 2273.92 621 591 179.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct