ASTROSAT CZTI

Data Quality Report

Orbit 00869

Creation date: 2024-06-27T14:04:04.159363
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/AS1P01_161T02_9000000124_00869cztM0_level2.evt modeM0/AS1P01_161T02_9000000124_00869cztM0_level2_quad_clean.evt
Size (bytes)261,590,40025,704,000
Size249.5 MB 24.5 MB
Events in quadrant A1,805,101172,595
Events in quadrant B1,946,944175,684
Events in quadrant C1,823,746171,960
Events in quadrant D2,247,460149,589

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063940
B068360
C064510
D077380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145610.068681%
B145620.137363%
C145610.068681%
D145622315.315934%

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 1456 1456 51 51 3.50% 3.50%
B 1456 1456 73 73 5.01% 5.01%
C 1456 1456 49 49 3.37% 3.37%
D 1456 1456 299 299 20.54% 20.54%

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 15 233 13185 113.41 467 470 112.1
A 0 5 1937 13.08 467 470 112.1
A 3 111 1294 7.35 467 470 112.1
B 8 38 42862 379.46 482 484 111.7
B 0 220 31907 281.37 482 484 111.7
B 7 221 21368 187.0 482 484 111.7
C 3 111 6402 45.94 462 480 128.9
C 3 79 5563 39.43 462 480 128.9
C 15 241 3445 23.0 462 480 128.9
D 10 102 617574 4866.25 416 431 126.8
D 12 188 29929 232.6 416 431 126.8
D 13 169 9258 69.6 416 431 126.8

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