ASTROSAT CZTI

Data Quality Report

Orbit 25626

Creation date: 2024-06-27T19:19:42.336095
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_127T03_9000003732_25626cztM0_level2.evt modeM0/AS1A07_127T03_9000003732_25626cztM0_level2_quad_clean.evt
Size (bytes)676,880,64084,948,480
Size645.5 MB 81.0 MB
Events in quadrant A3,973,942527,296
Events in quadrant B3,646,145539,832
Events in quadrant C3,581,405513,275
Events in quadrant D8,795,680474,873

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161730
B0154440
C0153050
D0312130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74271301.750370%
B74281091.467421%
C74281131.521271%
D742892112.399031%

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 7822 7428 23 23 0.29% 0.31%
B 7823 7429 6 6 0.08% 0.08%
C 7823 7429 0 0 0.00% 0.00%
D 7823 7428 887 887 11.34% 11.94%

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 0 13 209893 1132.54 918 899 184.5
A 8 192 170777 920.57 918 899 184.5
A 6 16 40792 216.18 918 899 184.5
B 15 33 27993 152.82 910 887 177.4
B 0 190 25314 137.72 910 887 177.4
B 12 111 22135 119.8 910 887 177.4
C 14 238 138841 661.33 877 880 208.6
C 2 16 23586 108.84 877 880 208.6
C 13 61 6006 24.57 877 880 208.6
D 13 174 4588854 19629.65 862 844 233.7
D 1 52 549065 2345.55 862 844 233.7
D 8 195 255265 1088.53 862 844 233.7

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