ASTROSAT CZTI

Data Quality Report

Orbit 55388

Creation date: 2025-12-24T00:16:43.085096
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_009T01_9000006534_55388cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55388cztM0_level2_quad_clean.evt
Size (bytes)1,032,765,120236,661,120
Size984.9 MB 225.7 MB
Events in quadrant A11,255,0571,482,680
Events in quadrant B7,631,4261,677,197
Events in quadrant C7,832,5641,504,097
Events in quadrant D10,255,3371,384,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0448834
B0347413
C0354453
D0419373

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1619611857.316621%
B161973231.994196%
C161972541.568192%
D161977144.408224%

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 19566 16196 824 824 4.21% 5.09%
B 19567 16198 127 127 0.65% 0.78%
C 19567 16197 133 133 0.68% 0.82%
D 19567 16197 555 555 2.84% 3.43%

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 4 159 2399553 5696.76 1709 1668 420.9
A 0 8 1145467 2717.37 1709 1668 420.9
A 6 162 895560 2123.66 1709 1668 420.9
B 5 185 490876 1333.79 1720 1656 366.8
B 10 247 150276 405.19 1720 1656 366.8
B 0 199 54205 143.27 1720 1656 366.8
C 13 3 750825 1604.38 1700 1682 466.9
C 9 38 183903 390.25 1700 1682 466.9
C 14 254 137470 290.81 1700 1682 466.9
D 8 160 1237363 2626.42 1681 1611 470.5
D 11 129 921496 1955.09 1681 1611 470.5
D 3 12 474859 1005.82 1681 1611 470.5

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