ASTROSAT CZTI

Data Quality Report

Orbit 54202

Creation date: 2025-10-05T05:11:25.566758
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/AS1C09_004T08_9000006514_54202cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54202cztM0_level2_quad_clean.evt
Size (bytes)551,413,440120,199,680
Size525.9 MB 114.6 MB
Events in quadrant A4,235,443795,516
Events in quadrant B5,203,551842,184
Events in quadrant C4,934,100724,593
Events in quadrant D5,387,723694,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186390
B0212850
C0209880
D0219130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8379981.169591%
B83803364.009547%
C83803394.045346%
D83802432.899761%

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 8379 8379 84 84 1.00% 1.00%
B 8380 8380 184 184 2.20% 2.20%
C 8380 8380 267 267 3.19% 3.19%
D 8380 8380 257 257 3.07% 3.07%

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 15 174 238135 1071.76 894 871 221.4
A 3 130 145776 654.56 894 871 221.4
A 7 29 79397 354.71 894 871 221.4
B 4 171 935678 4976.49 881 849 187.8
B 15 20 186729 989.52 881 849 187.8
B 0 213 144608 765.29 881 849 187.8
C 12 252 498144 2090.95 864 853 237.8
C 15 215 322799 1353.68 864 853 237.8
C 12 2 262428 1099.84 864 853 237.8
D 2 207 585755 2392.07 867 830 244.5
D 3 12 406079 1657.28 867 830 244.5
D 2 172 226903 924.53 867 830 244.5

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