ASTROSAT CZTI

Data Quality Report

Orbit 38794

Creation date: 2024-06-27T21:56:29.998045
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_044T04_9000005396_38794cztM0_level2.fits modeM0/AS1A12_044T04_9000005396_38794cztM0_level2_quad_clean.evt
Size (bytes)349,200,00096,943,680
Size333.0 MB 92.5 MB
Events in quadrant A2,879,916658,332
Events in quadrant B3,060,593682,474
Events in quadrant C2,723,029643,819
Events in quadrant D3,848,340578,305

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117923
B0124012
C0111292
D0151542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5324110.206612%
B5324811.521412%
C5324100.187829%
D53241072.009767%

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 7327 5325 7 7 0.10% 0.13%
B 7327 5325 57 57 0.78% 1.07%
C 7327 5325 6 6 0.08% 0.11%
D 7327 5325 94 94 1.28% 1.77%

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 400887 3235.42 613 602 123.7
A 12 16 62812 502.83 613 602 123.7
A 9 143 20859 163.73 613 602 123.7
B 5 184 241696 2060.56 620 604 117.0
B 5 200 167673 1427.9 620 604 117.0
B 4 171 94812 805.18 620 604 117.0
C 15 214 235701 1669.62 610 613 140.8
C 0 10 55731 391.45 610 613 140.8
C 14 254 33963 236.86 610 613 140.8
D 12 235 574426 3998.58 594 580 143.5
D 2 16 442828 3081.6 594 580 143.5
D 10 118 197857 1374.63 594 580 143.5

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