ASTROSAT CZTI

Data Quality Report

Orbit 00665

Creation date: 2024-06-27T14:01:15.905012
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/AS1P01_124T01_9000000094_00665cztM0_level2.evt modeM0/AS1P01_124T01_9000000094_00665cztM0_level2_quad_clean.evt
Size (bytes)780,727,68047,491,200
Size744.6 MB 45.3 MB
Events in quadrant A6,006,183273,143
Events in quadrant B6,013,006281,668
Events in quadrant C5,277,086276,808
Events in quadrant D6,018,766258,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213746
B0213882
C0191952
D0214112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4950561.131313%
B4950200.404040%
C495040.080808%
D49501553.131313%

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 7106 4951 187 187 2.63% 3.78%
B 7106 4951 130 130 1.83% 2.63%
C 7106 4951 27 27 0.38% 0.55%
D 7106 4951 342 342 4.81% 6.91%

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 12 133 285652 899.07 1438 1427 316.1
A 15 171 58750 181.33 1438 1427 316.1
A 12 236 23616 70.19 1438 1427 316.1
B 4 172 107983 310.52 1468 1478 343.0
B 7 221 104556 300.52 1468 1478 343.0
B 5 191 49701 140.59 1468 1478 343.0
C 15 241 18985 47.52 1329 1376 370.6
C 3 159 12290 29.45 1329 1376 370.6
C 9 52 9797 22.72 1329 1376 370.6
D 1 4 646237 1662.05 1245 1286 388.0
D 13 221 217630 557.52 1245 1286 388.0
D 13 216 203135 520.17 1245 1286 388.0

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