ASTROSAT CZTI

Data Quality Report

Orbit 58649

Creation date: 2026-07-31T10:33:15.388865
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_004T06_9000006594_58649cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58649cztM0_level2_quad_clean.evt
Size (bytes)18,506,8801,483,200
Size17.6 MB 1.4 MB
Events in quadrant A367,3971,106
Events in quadrant B73,7468,441
Events in quadrant C77,6018,643
Events in quadrant D149,0436,367

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124946
B036313
C037514
D058817

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17212773.837209%
B17400.000000%
C17500.000000%
D1751810.285714%

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 173 172 123 123 71.10% 71.51%
B 175 175 0 0 0.00% 0.00%
C 176 176 0 0 0.00% 0.00%
D 175 175 17 17 9.71% 9.71%

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 12 114 256413 53369.55 12 12 4.8
A 10 17 55776 11607.21 12 12 4.8
A 3 245 2819 584.27 12 12 4.8
B 8 234 1778 314.65 17 17 5.6
B 5 185 1182 208.16 17 17 5.6
B 0 186 695 121.14 17 17 5.6
C 12 252 6299 965.08 17 16 6.5
C 13 3 3145 480.62 17 16 6.5
C 12 250 346 50.69 17 16 6.5
D 8 240 59422 9851.85 16 15 6.0
D 11 129 16615 2752.89 16 15 6.0
D 2 249 6329 1047.09 16 15 6.0

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