ASTROSAT CZTI

Data Quality Report

Orbit 35712

Creation date: 2022-05-09T15:17:44.980923
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/AS1A09_029T01_9000005116_35712cztM0_level2.evt modeM0/AS1A09_029T01_9000005116_35712cztM0_level2_quad_clean.evt
Size (bytes)109,059,84027,328,320
Size104.0 MB 26.1 MB
Events in quadrant A682,898188,117
Events in quadrant B785,328189,527
Events in quadrant C793,753176,454
Events in quadrant D947,089172,937

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028831
B031831
C031651
D036941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134210.074516%
B1342171.266766%
C1342614.545455%
D1342413.055142%

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 1342 1342 0 0 0.00% 0.00%
B 1342 1342 12 12 0.89% 0.89%
C 1342 1342 51 51 3.80% 3.80%
D 1342 1342 46 46 3.43% 3.43%

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 10 83 60045 1749.81 159 156 34.2
A 10 67 2171 58.87 159 156 34.2
A 13 6 2130 57.68 159 156 34.2
B 5 255 50477 1571.18 157 154 32.0
B 5 172 50281 1565.06 157 154 32.0
B 5 200 37531 1166.98 157 154 32.0
C 0 10 159759 4516.61 145 146 35.3
C 15 214 58002 1637.17 145 146 35.3
C 10 49 6552 181.27 145 146 35.3
D 1 52 282787 7349.79 149 144 38.5
D 2 153 28726 743.24 149 144 38.5
D 12 6 11949 306.97 149 144 38.5

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