ASTROSAT CZTI

Data Quality Report

Orbit 53857

Creation date: 2025-09-12T00:20:05.639743
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_057T04_9000006508_53857cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53857cztM0_level2_quad_clean.evt
Size (bytes)1,604,329,920234,037,440
Size1.5 GB 223.2 MB
Events in quadrant A10,893,9371,627,806
Events in quadrant B14,046,2061,570,313
Events in quadrant C20,051,2471,259,105
Events in quadrant D13,027,3151,406,741

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0444143
B0540065
C0718743
D0508503

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177225913.334838%
B17721206511.652841%
C17721354520.004514%
D1772212837.239589%

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 19337 17726 346 346 1.79% 1.95%
B 19336 17725 1547 1547 8.00% 8.73%
C 19336 17725 3164 3164 16.36% 17.85%
D 19337 17726 1308 1308 6.76% 7.38%

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 8 249 1236678 2638.99 1907 1858 467.9
A 10 253 878234 1872.94 1907 1858 467.9
A 0 8 753436 1606.23 1907 1858 467.9
B 5 172 2489370 6481.36 1802 1740 383.8
B 0 213 1843067 4797.46 1802 1740 383.8
B 5 185 1509274 3927.78 1802 1740 383.8
C 15 224 8108431 17485.25 1694 1681 463.6
C 1 241 1716868 3699.45 1694 1681 463.6
C 12 2 1348374 2904.65 1694 1681 463.6
D 10 172 1853264 3600.08 1823 1749 514.3
D 3 12 1421338 2760.25 1823 1749 514.3
D 3 224 660592 1281.05 1823 1749 514.3

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