ASTROSAT CZTI

Data Quality Report

Orbit 33961

Creation date: 2024-06-27T20:54:53.785919
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_058T01_9000004854_33961cztM0_level2.evt modeM0/AS1A11_058T01_9000004854_33961cztM0_level2_quad_clean.evt
Size (bytes)481,590,720106,030,080
Size459.3 MB 101.1 MB
Events in quadrant A2,602,457747,309
Events in quadrant B3,215,641740,092
Events in quadrant C3,084,865703,047
Events in quadrant D5,324,925651,723

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108923
B0127142
C0120092
D0194372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A527460.113766%
B52741192.256352%
C5274741.403110%
D527454010.238908%

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 7337 5275 1 1 0.01% 0.02%
B 7337 5275 86 86 1.17% 1.63%
C 7337 5275 51 51 0.70% 0.97%
D 7337 5275 432 432 5.89% 8.19%

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 15 169 100372 780.55 642 630 127.8
A 10 83 15045 112.81 642 630 127.8
A 13 254 9231 67.31 642 630 127.8
B 5 172 441934 3786.04 628 615 116.6
B 3 112 116567 994.74 628 615 116.6
B 4 232 45052 381.22 628 615 116.6
C 3 233 233276 1666.09 610 613 139.6
C 15 214 232234 1658.63 610 613 139.6
C 0 10 218024 1556.87 610 613 139.6
D 7 238 1043257 7013.51 597 581 148.7
D 8 195 886404 5958.45 597 581 148.7
D 13 249 460616 3094.4 597 581 148.7

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