ASTROSAT CZTI

Data Quality Report

Orbit 24275

Creation date: 2024-06-27T19:04:13.882278
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/AS1C05_007T01_9000003588_24275cztM0_level2.evt modeM0/AS1C05_007T01_9000003588_24275cztM0_level2_quad_clean.evt
Size (bytes)743,624,64095,192,640
Size709.2 MB 90.8 MB
Events in quadrant A3,395,728640,989
Events in quadrant B3,338,741656,251
Events in quadrant C3,810,982628,227
Events in quadrant D11,552,635519,991

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135002
B0133852
C0155652
D0386552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6255851.358913%
B6255761.215028%
C62551001.598721%
D6255302148.297362%

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 7575 6255 17 17 0.22% 0.27%
B 7575 6255 0 0 0.00% 0.00%
C 7575 6255 1 1 0.01% 0.02%
D 7574 6254 3008 3008 39.71% 48.10%

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 86981 502.04 859 843 171.6
A 13 254 9331 49.47 859 843 171.6
A 0 226 7345 37.9 859 843 171.6
B 12 111 18633 110.83 851 832 160.6
B 11 111 16982 100.55 851 832 160.6
B 14 111 15085 88.74 851 832 160.6
C 7 247 368193 1900.77 830 840 193.3
C 14 238 131068 673.83 830 840 193.3
C 2 16 71660 366.44 830 840 193.3
D 1 52 6217876 37204.36 689 672 167.1
D 1 239 1212099 7249.3 689 672 167.1
D 8 195 1208810 7229.62 689 672 167.1

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