ASTROSAT CZTI

Data Quality Report

Orbit 40550

Creation date: 2024-06-27T22:17:27.577197
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_011T26_9000005548_40550cztM0_level2.fits modeM0/AS1A12_011T26_9000005548_40550cztM0_level2_quad_clean.evt
Size (bytes)320,529,60084,343,680
Size305.7 MB 80.4 MB
Events in quadrant A2,821,540600,896
Events in quadrant B2,459,989614,178
Events in quadrant C2,529,819573,408
Events in quadrant D3,639,449394,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115193
B0107322
C0108142
D0144552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5292110.207861%
B529270.132275%
C5292140.264550%
D5292163530.895692%

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 7265 5293 2 2 0.03% 0.04%
B 7265 5293 0 0 0.00% 0.00%
C 7265 5293 8 8 0.11% 0.15%
D 7264 5292 149 149 2.05% 2.82%

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 474811 3963.08 585 574 119.7
A 6 10 50017 413.18 585 574 119.7
A 3 1 18363 148.66 585 574 119.7
B 3 112 121584 1082.63 580 563 111.8
B 0 230 19088 165.72 580 563 111.8
B 4 171 14706 126.52 580 563 111.8
C 15 214 233703 1754.43 569 571 132.9
C 14 254 33194 245.5 569 571 132.9
C 0 10 25006 183.88 569 571 132.9
D 12 227 888840 7412.5 483 469 119.8
D 2 250 421403 3512.24 483 469 119.8
D 12 191 280597 2337.37 483 469 119.8

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