ASTROSAT CZTI

Data Quality Report

Orbit 35155

Creation date: 2022-03-30T13:10:55.793402
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/AS1A11_069T01_9000005034_35155cztM0_level2.evt modeM0/AS1A11_069T01_9000005034_35155cztM0_level2_quad_clean.evt
Size (bytes)238,731,84020,563,200
Size227.7 MB 19.6 MB
Events in quadrant A994,492132,902
Events in quadrant B2,764,58696,226
Events in quadrant C1,319,413126,988
Events in quadrant D2,010,891117,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043141
B095961
C052101
D074091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204650.244379%
B204674836.559140%
C2046944.594330%
D20461929.384164%

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 3329 2047 1 1 0.03% 0.05%
B 3329 2047 509 509 15.29% 24.87%
C 3329 2047 85 85 2.55% 4.15%
D 3329 2047 148 148 4.45% 7.23%

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 42278 861.19 232 227 48.8
A 9 143 32753 666.12 232 227 48.8
A 15 169 9959 199.31 232 227 48.8
B 5 236 1962166 49284.48 195 190 39.8
B 5 172 30186 753.49 195 190 39.8
B 12 111 4720 113.79 195 190 39.8
C 0 207 213462 3888.87 225 227 54.8
C 0 10 135421 2465.6 225 227 54.8
C 15 214 86031 1564.85 225 227 54.8
D 8 195 678554 12119.09 220 213 56.0
D 13 249 154170 2750.56 220 213 56.0
D 7 80 84811 1511.41 220 213 56.0

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