ASTROSAT CZTI

Data Quality Report

Orbit 57268

Creation date: 2026-04-29T12:06:08.776707
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_049T03_9000006570_57268cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57268cztM0_level2_quad_clean.evt
Size (bytes)514,437,120110,623,680
Size490.6 MB 105.5 MB
Events in quadrant A3,778,815733,288
Events in quadrant B3,998,459778,093
Events in quadrant C6,763,564645,728
Events in quadrant D3,892,668646,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167000
B0176470
C0255610
D0173850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7843220.280505%
B78441622.065273%
C78447529.586945%
D78441011.287608%

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 7843 7843 12 12 0.15% 0.15%
B 7844 7844 83 83 1.06% 1.06%
C 7844 7844 611 611 7.79% 7.79%
D 7844 7844 93 93 1.19% 1.19%

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 4 463144 2263.7 824 804 204.2
A 3 14 53745 259.21 824 804 204.2
A 7 64 46399 223.24 824 804 204.2
B 5 185 320543 1848.9 814 783 172.9
B 10 247 131185 754.01 814 783 172.9
B 8 234 80622 461.64 814 783 172.9
C 15 224 3500727 16557.76 778 770 211.4
C 14 67 94733 444.52 778 770 211.4
C 14 254 24408 111.83 778 770 211.4
D 3 12 265693 1191.69 794 758 222.3
D 7 96 198243 888.3 794 758 222.3
D 5 173 71395 317.73 794 758 222.3

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