ASTROSAT CZTI

Data Quality Report

Orbit 37436

Creation date: 2024-06-27T21:39:58.363189
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/AS1A09_002T01_9000005322_37436cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37436cztM0_level2_quad_clean.evt
Size (bytes)418,374,72097,695,360
Size399.0 MB 93.2 MB
Events in quadrant A2,810,853651,032
Events in quadrant B3,009,072660,739
Events in quadrant C2,936,098668,378
Events in quadrant D3,569,371622,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113613
B0121432
C0115982
D0139572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5086210.412898%
B50861462.870625%
C50861112.182462%
D50861793.519465%

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 7119 5087 8 8 0.11% 0.16%
B 7119 5087 103 103 1.45% 2.02%
C 7119 5087 96 96 1.35% 1.89%
D 7119 5087 175 175 2.46% 3.44%

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 275619 2319.04 597 586 118.6
A 15 222 146713 1232.12 597 586 118.6
A 12 189 45528 378.94 597 586 118.6
B 15 35 248518 2252.87 585 572 110.1
B 4 171 128352 1161.02 585 572 110.1
B 0 189 92379 834.17 585 572 110.1
C 14 254 233947 1720.14 584 588 135.7
C 15 214 232314 1708.11 584 588 135.7
C 0 10 182403 1340.2 584 588 135.7
D 12 227 573025 4114.42 581 566 139.1
D 10 253 294903 2115.48 581 566 139.1
D 2 249 204113 1462.95 581 566 139.1

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