ASTROSAT CZTI

Data Quality Report

Orbit 08944

Creation date: 2024-06-27T15:39:17.085051
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/AS1A03_092T01_9000001240_08944cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08944cztM0_level2_quad_clean.evt
Size (bytes)490,086,72080,847,360
Size467.4 MB 77.1 MB
Events in quadrant A3,537,666504,487
Events in quadrant B3,280,376511,174
Events in quadrant C3,135,450505,629
Events in quadrant D4,459,444485,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144573
B0135162
C0132852
D0173022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63271261.991465%
B63271121.770191%
C6327881.390865%
D63273365.310574%

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 7567 6327 15 15 0.20% 0.24%
B 7567 6327 1 1 0.01% 0.02%
C 7567 6327 0 0 0.00% 0.00%
D 7567 6327 200 200 2.64% 3.16%

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 8 5 259778 1572.18 824 808 164.7
A 5 16 54121 323.66 824 808 164.7
A 13 251 15199 87.37 824 808 164.7
B 6 51 31342 198.17 826 809 154.1
B 0 219 23595 147.89 826 809 154.1
B 12 111 15843 97.57 826 809 154.1
C 13 61 6132 29.23 803 807 182.2
C 12 4 3267 13.51 803 807 182.2
C 3 202 2095 7.07 803 807 182.2
D 12 233 567688 2920.81 789 771 194.1
D 13 29 219596 1127.41 789 771 194.1
D 1 52 210706 1081.6 789 771 194.1

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