ASTROSAT CZTI

Data Quality Report

Orbit 21787

Creation date: 2024-06-27T18:32:12.516904
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/AS1A07_006T01_9000003226_21787cztM0_level2.evt modeM0/AS1A07_006T01_9000003226_21787cztM0_level2_quad_clean.evt
Size (bytes)566,550,72067,896,000
Size540.3 MB 64.8 MB
Events in quadrant A3,114,738416,557
Events in quadrant B3,322,818424,041
Events in quadrant C3,132,216413,942
Events in quadrant D7,147,466346,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133382
B0137801
C0133091
D0258071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6506480.737781%
B6507741.137237%
C6507891.367758%
D650793614.384509%

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 7301 6507 0 0 0.00% 0.00%
B 7302 6508 9 9 0.12% 0.14%
C 7302 6508 0 0 0.00% 0.00%
D 7302 6507 761 761 10.42% 11.70%

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 5 16 22251 132.78 801 787 161.7
A 13 254 12327 71.39 801 787 161.7
A 0 226 6947 38.11 801 787 161.7
B 3 64 64809 411.37 805 785 155.6
B 0 190 30221 189.14 805 785 155.6
B 0 197 20896 129.22 805 785 155.6
C 14 238 121184 667.87 772 777 180.3
C 13 61 5553 26.49 772 777 180.3
C 3 202 1929 6.39 772 777 180.3
D 1 52 2152350 11972.88 733 711 179.7
D 7 238 2022465 11250.13 733 711 179.7
D 2 136 119799 662.67 733 711 179.7

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