ASTROSAT CZTI

Data Quality Report

Orbit 15278

Creation date: 2024-06-27T17:06:32.143503
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/AS1G08_037T01_9000002256_15278cztM0_level2.evt modeM0/AS1G08_037T01_9000002256_15278cztM0_level2_quad_clean.evt
Size (bytes)213,926,40030,078,720
Size204.0 MB 28.7 MB
Events in quadrant A1,467,316176,224
Events in quadrant B1,701,758177,465
Events in quadrant C1,596,534176,414
Events in quadrant D1,508,782167,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061932
B068171
C063671
D065251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2976511.713710%
B2976832.788978%
C2976431.444892%
D29761033.461022%

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 3662 2977 0 0 0.00% 0.00%
B 3662 2977 26 26 0.71% 0.87%
C 3662 2977 0 0 0.00% 0.00%
D 3662 2977 21 21 0.57% 0.71%

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 38097 488.93 369 361 77.2
A 9 143 10416 130.28 369 361 77.2
A 0 226 3159 36.25 369 361 77.2
B 10 16 179818 2425.02 371 361 74.0
B 0 189 21244 282.19 371 361 74.0
B 0 229 18082 239.47 371 361 74.0
C 3 233 180953 2113.29 361 362 85.5
C 7 247 6381 70.43 361 362 85.5
C 13 61 2584 26.0 361 362 85.5
D 10 70 120575 1357.62 353 341 88.6
D 7 38 31342 350.05 353 341 88.6
D 2 234 11427 125.18 353 341 88.6

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