ASTROSAT CZTI

Data Quality Report

Orbit 22945

Creation date: 2024-06-27T18:47:51.167765
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/AS1A08_009T01_9000003390_22945cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22945cztM0_level2_quad_clean.evt
Size (bytes)1,525,968,000330,243,840
Size1.4 GB 314.9 MB
Events in quadrant A10,458,6842,164,507
Events in quadrant B10,698,3542,222,753
Events in quadrant C10,573,7222,094,700
Events in quadrant D13,007,8932,017,851

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0540
C0540
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04460
B04460
C04460
D04460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451065
B0456356
C0455565
D0533905

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A218341830.838142%
B218332221.016809%
C218332901.328265%
D218333511.607658%

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 26369 21838 5 5 0.02% 0.02%
B 26368 21837 6 6 0.02% 0.03%
C 26368 21837 5 5 0.02% 0.02%
D 26368 21837 187 187 0.71% 0.86%

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 13 170 58759 105.11 2696 2642 533.9
A 13 254 34809 60.25 2696 2642 533.9
A 0 226 23181 38.47 2696 2642 533.9
B 0 190 75586 148.53 2681 2619 491.3
B 0 189 61505 119.87 2681 2619 491.3
B 12 111 59142 115.06 2681 2619 491.3
C 14 238 415224 707.84 2555 2571 583.0
C 0 10 118602 199.03 2555 2571 583.0
C 7 247 68573 113.22 2555 2571 583.0
D 7 238 917768 1473.78 2583 2506 621.0
D 1 52 899344 1444.11 2583 2506 621.0
D 13 153 672317 1078.55 2583 2506 621.0

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