ASTROSAT CZTI

Data Quality Report

Orbit 25870

Creation date: 2024-06-27T19:22:18.311811
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_068T01_9000003756_25870cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25870cztM0_level2_quad_clean.evt
Size (bytes)510,269,76096,022,080
Size486.6 MB 91.6 MB
Events in quadrant A4,467,730613,790
Events in quadrant B3,577,114622,066
Events in quadrant C3,377,436588,672
Events in quadrant D3,550,380589,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180820
B0151830
C0146270
D0154160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70941071.508317%
B7094660.930364%
C7094600.845785%
D7094600.845785%

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 7649 7095 42 42 0.55% 0.59%
B 7649 7095 18 18 0.24% 0.25%
C 7649 7095 2 2 0.03% 0.03%
D 7649 7095 22 22 0.29% 0.31%

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 1147910 6588.96 861 846 174.1
A 13 254 10640 56.26 861 846 174.1
A 3 137 8208 42.29 861 846 174.1
B 10 245 206306 1240.58 854 831 165.6
B 12 111 20175 116.79 854 831 165.6
B 11 111 18039 103.89 854 831 165.6
C 14 238 130437 677.16 815 821 191.4
C 3 233 54186 278.8 815 821 191.4
C 14 128 10694 51.58 815 821 191.4
D 1 52 258284 1306.34 824 804 197.1
D 12 233 107544 541.55 824 804 197.1
D 7 80 33308 164.91 824 804 197.1

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