ASTROSAT CZTI

Data Quality Report

Orbit 51282

Creation date: 2025-03-22T13:23:33.802138
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/AS1C07_001T01_9000006454_51282cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51282cztM0_level2_quad_clean.evt
Size (bytes)860,561,280100,517,760
Size820.7 MB 95.9 MB
Events in quadrant A7,969,796657,286
Events in quadrant B4,124,557771,228
Events in quadrant C12,106,361464,699
Events in quadrant D7,056,083611,011

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292080
B0178710
C0413390
D0265880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77477569.758616%
B77471041.342455%
C7747279936.130115%
D77477509.681167%

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 7747 7747 676 676 8.73% 8.73%
B 7747 7747 66 66 0.85% 0.85%
C 7747 7747 2860 2860 36.92% 36.92%
D 7747 7747 796 796 10.27% 10.27%

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 12 3 2138373 11335.58 756 739 188.6
A 12 250 1673243 8869.06 756 739 188.6
A 8 78 316807 1676.07 756 739 188.6
B 5 185 518886 3088.41 780 754 167.8
B 7 252 108682 643.32 780 754 167.8
B 10 247 65050 383.25 780 754 167.8
C 4 12 6058806 35792.47 611 607 169.3
C 10 171 1842440 10881.74 611 607 169.3
C 13 49 755880 4462.23 611 607 169.3
D 8 176 1398262 6870.34 722 697 203.4
D 6 42 910069 4470.42 722 697 203.4
D 2 216 447421 2196.07 722 697 203.4

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