ASTROSAT CZTI

Data Quality Report

Orbit 15208

Creation date: 2024-06-27T17:05:18.444488
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/AS1T02_070T01_9000002244_15208cztM0_level2.evt modeM0/AS1T02_070T01_9000002244_15208cztM0_level2_quad_clean.evt
Size (bytes)228,680,64025,231,680
Size218.1 MB 24.1 MB
Events in quadrant A1,563,189137,275
Events in quadrant B1,683,630138,676
Events in quadrant C1,965,321134,699
Events in quadrant D1,500,032131,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065641
B069161
C080991
D064651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3110100.321543%
B3110170.546624%
C311090.289389%
D311090.289389%

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 3111 3111 0 0 0.00% 0.00%
B 3111 3111 5 5 0.16% 0.16%
C 3111 3111 0 0 0.00% 0.00%
D 3111 3111 4 4 0.13% 0.13%

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 12 189 48079 597.95 390 381 79.8
A 9 143 6048 71.04 390 381 79.8
A 13 248 5622 65.7 390 381 79.8
B 3 112 42493 556.04 388 377 75.7
B 3 64 34666 452.7 388 377 75.7
B 0 189 25637 333.5 388 377 75.7
C 3 233 330865 3778.35 375 378 87.5
C 7 247 170855 1949.01 375 378 87.5
C 13 61 2730 26.89 375 378 87.5
D 8 195 15554 160.64 379 367 94.5
D 2 234 11850 121.46 379 367 94.5
D 7 38 11675 119.61 379 367 94.5

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