ASTROSAT CZTI

Data Quality Report

Orbit 33731

Creation date: 2024-06-27T20:51:55.199106
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_086T01_9000004816_33731cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33731cztM0_level2_quad_clean.evt
Size (bytes)477,434,88075,922,560
Size455.3 MB 72.4 MB
Events in quadrant A2,568,174487,217
Events in quadrant B4,331,829473,221
Events in quadrant C2,981,097488,994
Events in quadrant D4,200,253459,857

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114452
B0164791
C0121921
D0163411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5563120.215711%
B556363211.360777%
C5563721.294266%
D55632244.026604%

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 7116 5564 6 6 0.08% 0.11%
B 7116 5564 471 471 6.62% 8.47%
C 7116 5564 62 62 0.87% 1.11%
D 7116 5564 216 216 3.04% 3.88%

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 14 4 58693 448.5 642 629 129.5
A 15 169 19459 145.45 642 629 129.5
A 13 254 9874 71.41 642 629 129.5
B 5 172 1701561 14709.99 601 584 115.6
B 5 200 68307 585.67 601 584 115.6
B 0 245 55546 475.31 601 584 115.6
C 15 214 260155 1790.18 624 628 145.0
C 0 10 174518 1199.47 624 628 145.0
C 0 239 58508 399.25 624 628 145.0
D 8 195 762529 5033.91 614 598 151.4
D 12 16 351814 2320.4 614 598 151.4
D 2 250 237205 1563.21 614 598 151.4

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