ASTROSAT CZTI

Data Quality Report

Orbit 35434

Creation date: 2022-04-20T22:12:04.712782
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_097T17_9000005074_35434cztM0_level2.evt modeM0/AS1A11_097T17_9000005074_35434cztM0_level2_quad_clean.evt
Size (bytes)316,500,48029,252,160
Size301.8 MB 27.9 MB
Events in quadrant A1,581,284166,086
Events in quadrant B3,559,419169,270
Events in quadrant C2,030,342164,385
Events in quadrant D2,197,822159,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065662
B0127901
C079791
D086021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A317720.062952%
B317753116.713881%
C3177782.455146%
D3177892.801385%

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 5120 3178 0 0 0.00% 0.00%
B 5120 3178 319 319 6.23% 10.04%
C 5120 3178 67 67 1.31% 2.11%
D 5120 3178 77 77 1.50% 2.42%

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 66214 834.2 390 383 78.9
A 13 254 5070 59.39 390 383 78.9
A 3 137 3996 45.78 390 383 78.9
B 5 236 1074607 14912.58 373 364 72.0
B 4 251 971444 13480.48 373 364 72.0
B 5 172 13379 180.67 373 364 72.0
C 0 10 265847 3037.2 373 375 87.4
C 15 214 128872 1470.1 373 375 87.4
C 4 254 92445 1053.35 373 375 87.4
D 7 80 444274 4824.89 372 360 92.0
D 1 52 90685 981.74 372 360 92.0
D 2 249 64480 696.92 372 360 92.0

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