ASTROSAT CZTI

Data Quality Report

Orbit 48426

Creation date: 2024-09-11T07:31:12.977035
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/AS1A13_029T01_9000006426_48426cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48426cztM0_level2_quad_clean.evt
Size (bytes)264,386,88056,655,360
Size252.1 MB 54.0 MB
Events in quadrant A3,944,668360,744
Events in quadrant B1,644,524388,600
Events in quadrant C1,551,138373,573
Events in quadrant D2,360,575333,481

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142222
B077370
C076000
D098190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36592607.105767%
B3660310.846995%
C366050.136612%
D36601604.371585%

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 3659 3659 102 102 2.79% 2.79%
B 3660 3660 6 6 0.16% 0.16%
C 3660 3660 0 0 0.00% 0.00%
D 3660 3660 129 129 3.52% 3.52%

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 2123749 25242.39 391 381 84.1
A 13 248 304536 3615.76 391 381 84.1
A 13 254 7705 87.07 391 381 84.1
B 12 16 23660 285.0 402 389 81.7
B 12 32 13752 163.66 402 389 81.7
B 12 111 10559 124.55 402 389 81.7
C 15 208 6204 60.83 395 396 95.5
C 13 61 2548 22.54 395 396 95.5
C 12 2 2346 20.42 395 396 95.5
D 12 2 340233 3435.91 386 373 98.9
D 7 96 235682 2378.93 386 373 98.9
D 12 233 80270 807.74 386 373 98.9

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