ASTROSAT CZTI

Data Quality Report

Orbit 45200

Creation date: 2024-06-27T23:10:31.631980
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/AS1A13_049T06_9000006054_45200cztM0_level2.fits modeM0/AS1A13_049T06_9000006054_45200cztM0_level2_quad_clean.evt
Size (bytes)224,821,44047,162,880
Size214.4 MB 45.0 MB
Events in quadrant A2,388,319309,748
Events in quadrant B1,723,977330,129
Events in quadrant C1,880,530311,382
Events in quadrant D2,112,610278,909

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0905345
B0694437
C0747042
D0811431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27701565.631769%
B2764843.039074%
C27651374.954792%
D27701826.570397%

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 3842 2774 4 4 0.10% 0.14%
B 3846 2772 6 6 0.16% 0.22%
C 3839 2772 67 67 1.75% 2.42%
D 3840 2774 94 94 2.45% 3.39%

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 1064179 15009.99 334 326 70.9
A 15 174 15224 210.2 334 326 70.9
A 4 0 10534 144.03 334 326 70.9
B 4 170 203145 2981.07 339 328 68.0
B 3 112 88358 1293.89 339 328 68.0
B 0 183 40489 590.3 339 328 68.0
C 3 233 336165 4154.33 336 337 80.8
C 12 2 228582 2823.49 336 337 80.8
C 1 3 3945 44.63 336 337 80.8
D 1 52 185523 2207.0 330 319 83.9
D 12 238 175965 2093.1 330 319 83.9
D 5 235 153437 1824.64 330 319 83.9

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