ASTROSAT CZTI

Data Quality Report

Orbit 58371

Creation date: 2026-07-12T16:36:34.535798
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_045T01_9000006590_58371cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58371cztM0_level2_quad_clean.evt
Size (bytes)583,663,680111,507,840
Size556.6 MB 106.3 MB
Events in quadrant A4,937,918739,018
Events in quadrant B7,783,054692,355
Events in quadrant C3,943,832721,893
Events in quadrant D4,332,417678,031

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201130
B0284228
C0172751
D0180491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78352803.573708%
B7835141218.021698%
C7835470.599872%
D7835420.536056%

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 7835 7835 191 191 2.44% 2.44%
B 7834 7834 1020 1020 13.02% 13.02%
C 7835 7835 31 31 0.40% 0.40%
D 7835 7835 30 30 0.38% 0.38%

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 8 246 556218 2543.3 884 860 218.4
A 12 80 486081 2222.1 884 860 218.4
A 4 249 268048 1223.6 884 860 218.4
B 5 172 2635505 14825.4 829 800 177.7
B 2 249 670840 3770.29 829 800 177.7
B 6 255 353286 1983.43 829 800 177.7
C 14 245 186859 796.17 861 856 233.6
C 4 5 120055 510.22 861 856 233.6
C 1 16 52052 219.14 861 856 233.6
D 9 49 295352 1212.63 863 826 242.9
D 8 160 196184 804.34 863 826 242.9
D 11 129 153716 629.48 863 826 242.9

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