ASTROSAT CZTI

Data Quality Report

Orbit 41375

Creation date: 2024-06-27T22:28:17.982438
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/AS1A12_035T01_9000005660_41375cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41375cztM0_level2_quad_clean.evt
Size (bytes)328,628,16081,371,520
Size313.4 MB 77.6 MB
Events in quadrant A2,606,965554,112
Events in quadrant B2,220,935569,234
Events in quadrant C2,861,008524,131
Events in quadrant D4,092,916472,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107093
B0100322
C0115312
D0155942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491180.162900%
B4911100.203625%
C49112394.866626%
D49114378.898391%

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 7004 4912 4 4 0.06% 0.08%
B 7004 4912 3 3 0.04% 0.06%
C 7004 4912 232 232 3.31% 4.72%
D 7004 4912 380 380 5.43% 7.74%

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 486970 4323.77 542 531 112.5
A 12 189 15411 132.26 542 531 112.5
A 13 254 7151 58.84 542 531 112.5
B 0 190 52068 493.37 537 524 104.5
B 5 255 36966 348.82 537 524 104.5
B 12 111 13073 120.12 537 524 104.5
C 0 10 637045 5219.53 518 519 122.0
C 15 214 204844 1675.47 518 519 122.0
C 13 61 3349 23.21 518 519 122.0
D 13 249 960608 7666.99 513 499 125.2
D 1 47 474988 3789.05 513 499 125.2
D 1 52 295235 2353.63 513 499 125.2

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