ASTROSAT CZTI

Data Quality Report

Orbit 54220

Creation date: 2025-10-06T10:54:38.161229
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_54220cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54220cztM0_level2_quad_clean.evt
Size (bytes)1,814,042,880238,593,600
Size1.7 GB 227.5 MB
Events in quadrant A10,633,4611,717,850
Events in quadrant B9,700,1901,902,737
Events in quadrant C9,954,9031,629,745
Events in quadrant D35,387,258661,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0453943
B0426243
C0441394
D01183123

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190405552.914916%
B190413211.685836%
C190405702.993697%
D190401142460.000000%

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 20639 19042 369 369 1.79% 1.94%
B 20640 19044 123 123 0.60% 0.65%
C 20639 19043 432 432 2.09% 2.27%
D 20639 19043 10334 10334 50.07% 54.27%

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 3 130 614896 1260.59 1985 1937 486.2
A 12 17 472769 968.3 1985 1937 486.2
A 14 235 434758 890.13 1985 1937 486.2
B 5 236 599240 1419.71 1992 1923 420.7
B 4 171 478541 1132.83 1992 1923 420.7
B 0 213 157968 370.89 1992 1923 420.7
C 15 198 475186 903.33 1925 1907 523.9
C 15 215 452659 860.34 1925 1907 523.9
C 14 254 290615 551.05 1925 1907 523.9
D 8 176 26441950 77610.24 1173 1121 340.7
D 2 172 2219346 6511.03 1173 1121 340.7
D 2 62 1039096 3046.71 1173 1121 340.7

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