ASTROSAT CZTI

Data Quality Report

Orbit 36298

Creation date: 2022-06-15T16:46:32.435674
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_089T02_9000005188_36298cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36298cztM0_level2_quad_clean.evt
Size (bytes)193,757,76022,034,880
Size184.8 MB 21.0 MB
Events in quadrant A970,367142,941
Events in quadrant B955,209145,770
Events in quadrant C1,069,536141,003
Events in quadrant D2,742,20698,967

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040032
B039531
C042201
D093811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188870.370763%
B188840.211864%
C1888331.747881%
D188863733.739407%

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 3381 1889 0 0 0.00% 0.00%
B 3381 1889 1 1 0.03% 0.05%
C 3381 1889 26 26 0.77% 1.38%
D 3381 1889 621 621 18.37% 32.87%

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 76399 1588.37 228 224 48.0
A 9 143 4813 95.69 228 224 48.0
A 12 189 4304 85.07 228 224 48.0
B 8 128 39504 858.21 226 220 45.8
B 5 172 11890 254.95 226 220 45.8
B 12 111 5747 120.75 226 220 45.8
C 0 10 100721 1873.33 220 222 53.6
C 15 214 82938 1541.85 220 222 53.6
C 0 207 19099 351.87 220 222 53.6
D 12 227 1659918 34552.93 188 182 48.0
D 12 6 208409 4334.94 188 182 48.0
D 2 250 64315 1335.14 188 182 48.0

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