ASTROSAT CZTI

Data Quality Report

Orbit 44025

Creation date: 2024-06-27T22:58:26.511237
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/AS1A13_023T03_9000005934_44025cztM0_level2.fits modeM0/AS1A13_023T03_9000005934_44025cztM0_level2_quad_clean.evt
Size (bytes)832,824,000200,427,840
Size794.2 MB 191.1 MB
Events in quadrant A7,938,9741,362,967
Events in quadrant B5,782,9501,430,762
Events in quadrant C5,777,6641,351,444
Events in quadrant D10,430,0951,121,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317242
B0245762
C0245322
D0387594

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116121651.420944%
B11612890.766449%
C11613320.275553%
D1161211179.619359%

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 14052 11614 24 24 0.17% 0.21%
B 14052 11614 15 15 0.11% 0.13%
C 14053 11615 6 6 0.04% 0.05%
D 14052 11614 1059 1059 7.54% 9.12%

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 10 83 2070962 7392.83 1368 1343 279.9
A 15 222 470981 1677.58 1368 1343 279.9
A 15 223 36246 124.68 1368 1343 279.9
B 0 213 102789 379.96 1380 1340 267.0
B 2 2 67419 247.49 1380 1340 267.0
B 3 112 48194 175.48 1380 1340 267.0
C 3 233 311158 969.7 1360 1370 319.5
C 14 254 124976 386.91 1360 1370 319.5
C 1 241 38855 117.34 1360 1370 319.5
D 8 48 3373149 10410.86 1296 1260 323.9
D 1 52 795641 2452.69 1296 1260 323.9
D 2 120 305946 940.73 1296 1260 323.9

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