ASTROSAT CZTI

Data Quality Report

Orbit 20444

Creation date: 2024-06-27T18:15:29.190812
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/AS1A05_160T02_9000003022_20444cztM0_level2.evt modeM0/AS1A05_160T02_9000003022_20444cztM0_level2_quad_clean.evt
Size (bytes)573,960,96096,065,280
Size547.4 MB 91.6 MB
Events in quadrant A3,826,933610,618
Events in quadrant B4,374,459613,106
Events in quadrant C3,791,683588,338
Events in quadrant D4,863,003557,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162912
B0177632
C0160692
D0195522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77502473.187097%
B77503124.025806%
C77502603.354839%
D77515056.515288%

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 8105 7750 0 0 0.00% 0.00%
B 8105 7751 37 37 0.46% 0.48%
C 8105 7751 0 0 0.00% 0.00%
D 8106 7751 301 301 3.71% 3.88%

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 12 16 79753 401.74 965 941 196.2
A 12 194 19293 93.55 965 941 196.2
A 15 222 12095 56.86 965 941 196.2
B 0 189 128480 690.63 956 929 184.7
B 0 197 122059 655.86 956 929 184.7
B 10 245 96778 518.98 956 929 184.7
C 14 238 143455 654.96 921 925 217.6
C 3 233 29690 132.18 921 925 217.6
C 9 54 13931 59.77 921 925 217.6
D 1 52 638422 2772.44 924 896 230.0
D 7 38 278400 1206.8 924 896 230.0
D 12 218 135498 585.35 924 896 230.0

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