ASTROSAT CZTI

Data Quality Report

Orbit 27955

Creation date: 2024-06-27T19:46:22.418450
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/AS1A10_016T01_9000004034_27955cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27955cztM0_level2_quad_clean.evt
Size (bytes)661,466,88079,122,240
Size630.8 MB 75.5 MB
Events in quadrant A3,862,327480,735
Events in quadrant B5,373,793479,145
Events in quadrant C3,783,938464,749
Events in quadrant D6,505,905449,967

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160640
B0210240
C0158140
D0246560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74961331.774280%
B74953915.216811%
C74951992.655103%
D74954866.484323%

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 7736 7496 30 30 0.39% 0.40%
B 7735 7495 107 107 1.38% 1.43%
C 7735 7495 1 1 0.01% 0.01%
D 7735 7496 271 271 3.50% 3.62%

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 6 16 83664 424.78 963 943 194.7
A 13 248 31738 158.14 963 943 194.7
A 8 192 14990 72.13 963 943 194.7
B 10 245 1579740 8705.97 943 917 181.3
B 0 230 73508 400.28 943 917 181.3
B 12 111 22151 117.09 943 917 181.3
C 14 238 149235 681.37 920 926 217.7
C 15 208 23229 102.47 920 926 217.7
C 3 233 22170 97.6 920 926 217.7
D 1 52 1485888 6695.52 922 896 221.8
D 8 195 555441 2500.33 922 896 221.8
D 7 80 528955 2380.91 922 896 221.8

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