ASTROSAT CZTI

Data Quality Report

Orbit 26777

Creation date: 2024-06-27T19:32:47.855347
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_027T01_9000003862_26777cztM0_level2.evt modeM0/AS1A07_027T01_9000003862_26777cztM0_level2_quad_clean.evt
Size (bytes)644,100,480107,328,960
Size614.3 MB 102.4 MB
Events in quadrant A4,155,958708,620
Events in quadrant B4,294,263734,099
Events in quadrant C4,310,736712,135
Events in quadrant D6,325,304661,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166300
B0166760
C0168040
D0229390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225400.642570%
B62253916.281124%
C62253715.959839%
D622565010.441767%

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 7525 6226 8 8 0.11% 0.13%
B 7525 6226 276 276 3.67% 4.43%
C 7525 6226 202 202 2.68% 3.24%
D 7525 6226 544 544 7.23% 8.74%

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 860064 5086.98 854 839 168.9
A 13 254 10695 58.35 854 839 168.9
A 0 226 7408 38.89 854 839 168.9
B 0 189 977733 6282.43 842 820 155.5
B 0 190 27385 170.83 842 820 155.5
B 12 111 18184 111.66 842 820 155.5
C 2 16 884710 4577.9 835 842 193.1
C 14 238 134082 690.1 835 842 193.1
C 10 22 17153 84.48 835 842 193.1
D 7 80 1787555 9163.88 829 809 195.0
D 1 52 940211 4818.01 829 809 195.0
D 15 21 330808 1692.5 829 809 195.0

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