ASTROSAT CZTI

Data Quality Report

Orbit 35506

Creation date: 2022-04-23T03:55:21.341508
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/AS1A11_097T07_9000005084_35506cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35506cztM0_level2_quad_clean.evt
Size (bytes)309,012,48040,711,680
Size294.7 MB 38.8 MB
Events in quadrant A2,219,367232,911
Events in quadrant B2,450,755245,225
Events in quadrant C2,214,073243,700
Events in quadrant D2,205,638232,479

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090692
B097731
C088741
D091511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39391774.493526%
B39391193.021071%
C3939390.990099%
D3939531.345519%

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 5851 3940 162 162 2.77% 4.11%
B 5851 3940 64 64 1.09% 1.62%
C 5851 3940 23 23 0.39% 0.58%
D 5851 3940 51 51 0.87% 1.29%

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 15 169 366011 3945.15 460 451 92.7
A 10 83 73019 783.16 460 451 92.7
A 13 254 4990 48.99 460 451 92.7
B 5 172 347572 3901.65 465 454 89.0
B 5 200 246413 2764.61 465 454 89.0
B 4 232 12474 135.11 465 454 89.0
C 0 10 195476 1819.67 459 463 107.2
C 15 214 161082 1498.74 459 463 107.2
C 0 207 30793 283.01 459 463 107.2
D 2 249 265905 2433.15 452 442 109.1
D 8 195 50961 463.04 452 442 109.1
D 2 250 45726 415.06 452 442 109.1

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