ASTROSAT CZTI

Data Quality Report

Orbit 27833

Creation date: 2024-06-27T19:44:58.454171
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/AS1A10_002T04_9000004022_27833cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27833cztM0_level2_quad_clean.evt
Size (bytes)230,106,24045,610,560
Size219.4 MB 43.5 MB
Events in quadrant A1,572,870306,842
Events in quadrant B1,632,122303,795
Events in quadrant C1,678,557285,040
Events in quadrant D1,889,822281,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065490
B067790
C069570
D076110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2846531.862263%
B2846772.705552%
C2846873.056922%
D2846933.267744%

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 4036 2846 0 0 0.00% 0.00%
B 4036 2846 0 0 0.00% 0.00%
C 4036 2846 0 0 0.00% 0.00%
D 4036 2846 46 46 1.14% 1.62%

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 13 254 5161 58.26 407 399 81.7
A 3 137 3623 39.45 407 399 81.7
A 0 226 3398 36.69 407 399 81.7
B 0 190 49026 650.32 395 386 74.8
B 15 32 23943 314.96 395 386 74.8
B 12 111 8877 113.53 395 386 74.8
C 3 233 135916 1538.27 379 381 88.1
C 14 238 61877 697.96 379 381 88.1
C 13 61 2683 26.13 379 381 88.1
D 1 52 414553 4470.2 387 378 92.7
D 2 234 9963 103.45 387 378 92.7
D 14 35 5095 50.91 387 378 92.7

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