ASTROSAT CZTI

Data Quality Report

Orbit 08779

Creation date: 2024-06-27T15:37:05.530599
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/AS1G07_010T01_9000001220_08779cztM0_level2.evt modeM0/AS1G07_010T01_9000001220_08779cztM0_level2_quad_clean.evt
Size (bytes)748,368,000104,028,480
Size713.7 MB 99.2 MB
Events in quadrant A5,974,968614,667
Events in quadrant B4,594,060639,088
Events in quadrant C4,360,787631,516
Events in quadrant D7,076,690590,925

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01962
B01962
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024272147
B02027577
C01997388
D028066132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97203723.827160%
B97241181.213492%
C9725600.616967%
D97173914.023876%

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 10277 9755 237 237 2.31% 2.43%
B 10277 9761 22 22 0.21% 0.23%
C 10277 9761 9 9 0.09% 0.09%
D 10277 9760 299 299 2.91% 3.06%

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 1456570 6418.66 1111 1084 226.8
A 13 251 122609 535.92 1111 1084 226.8
A 15 223 76168 331.12 1111 1084 226.8
B 10 16 166238 755.07 1124 1094 218.7
B 4 173 47035 210.05 1124 1094 218.7
B 12 111 25065 109.6 1124 1094 218.7
C 9 68 94046 365.99 1092 1097 254.0
C 13 61 8293 28.33 1092 1097 254.0
C 8 222 4699 14.18 1092 1097 254.0
D 2 16 2455445 9134.5 1071 1043 268.7
D 2 152 325574 1207.8 1071 1043 268.7
D 7 71 87459 321.61 1071 1043 268.7

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