ASTROSAT CZTI

Data Quality Report

Orbit 19737

Creation date: 2024-06-27T18:06:35.616354
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/AS1C04_009T05_9000002946_19737cztM0_level2.evt modeM0/AS1C04_009T05_9000002946_19737cztM0_level2_quad_clean.evt
Size (bytes)422,700,480103,242,240
Size403.1 MB 98.5 MB
Events in quadrant A2,562,765699,041
Events in quadrant B2,765,707706,582
Events in quadrant C2,925,434676,279
Events in quadrant D4,157,293643,577

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116531
B0120481
C0123631
D0162761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5740691.202091%
B5740701.219512%
C57401091.898955%
D57404537.891986%

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 5754 5740 0 0 0.00% 0.00%
B 5754 5740 9 9 0.16% 0.16%
C 5754 5740 1 1 0.02% 0.02%
D 5754 5740 313 313 5.44% 5.45%

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 0 254 8277 56.7 661 644 134.6
A 13 254 5984 39.67 661 644 134.6
A 0 226 5759 37.99 661 644 134.6
B 7 220 50755 399.44 658 640 125.5
B 4 216 48152 378.69 658 640 125.5
B 4 171 34945 273.43 658 640 125.5
C 3 233 341733 2293.4 632 634 148.7
C 14 238 97967 654.42 632 634 148.7
C 7 247 19676 128.03 632 634 148.7
D 1 52 1108812 7442.28 620 602 148.9
D 7 238 528075 3542.29 620 602 148.9
D 12 218 110351 737.03 620 602 148.9

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