ASTROSAT CZTI

Data Quality Report

Orbit 12090

Creation date: 2024-06-27T16:22:18.280005
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_065T01_9000001796_12090cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12090cztM0_level2_quad_clean.evt
Size (bytes)716,284,800111,199,680
Size683.1 MB 106.0 MB
Events in quadrant A4,930,884705,960
Events in quadrant B5,691,842702,181
Events in quadrant C4,053,276701,036
Events in quadrant D6,435,121661,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205454
B0227353
C0180173
D0250133

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86032272.638614%
B86034545.277229%
C8603590.685807%
D86035155.986284%

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 9249 8607 71 71 0.77% 0.82%
B 9249 8607 222 222 2.40% 2.58%
C 9249 8607 1 1 0.01% 0.01%
D 9249 8607 336 336 3.63% 3.90%

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 13 251 525822 2460.41 1047 1025 213.3
A 1 162 161950 754.47 1047 1025 213.3
A 1 178 63270 291.82 1047 1025 213.3
B 4 239 1201896 6035.98 1042 1017 199.0
B 11 51 168575 842.2 1042 1017 199.0
B 15 204 153062 764.22 1042 1017 199.0
C 8 208 19625 78.4 1026 1027 237.2
C 15 208 14008 54.72 1026 1027 237.2
C 13 61 7610 27.75 1026 1027 237.2
D 1 52 1157482 4759.27 1000 971 243.0
D 8 195 525795 2159.75 1000 971 243.0
D 14 34 357183 1465.88 1000 971 243.0

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