ASTROSAT CZTI

Data Quality Report

Orbit 12951

Creation date: 2024-06-27T16:34:19.325779
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/AS1G08_043T01_9000001902_12951cztM0_level2.evt modeM0/AS1G08_043T01_9000001902_12951cztM0_level2_quad_clean.evt
Size (bytes)526,939,200100,788,480
Size502.5 MB 96.1 MB
Events in quadrant A3,750,015645,417
Events in quadrant B4,776,967637,855
Events in quadrant C3,322,359656,064
Events in quadrant D3,626,016617,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158953
B0188502
C0145302
D0155922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7116580.815065%
B71165948.347386%
C7116480.674536%
D7116811.138280%

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 9162 7119 8 8 0.09% 0.11%
B 9162 7119 268 268 2.93% 3.76%
C 9162 7119 1 1 0.01% 0.01%
D 9162 7119 45 45 0.49% 0.63%

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 15 239 224568 1282.76 856 837 174.4
A 1 162 94593 537.55 856 837 174.4
A 1 178 45299 254.92 856 837 174.4
B 4 239 1047254 6640.38 835 811 157.6
B 3 64 362124 2292.77 835 811 157.6
B 0 197 52573 328.46 835 811 157.6
C 13 61 6262 27.4 851 854 197.4
C 14 234 3218 11.98 851 854 197.4
C 8 222 2250 7.07 851 854 197.4
D 1 52 353694 1780.62 837 813 198.2
D 8 195 76725 383.05 837 813 198.2
D 2 234 26108 127.64 837 813 198.2

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