ASTROSAT CZTI

Data Quality Report

Orbit 40822

Creation date: 2024-06-27T22:20:58.222614
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_104T02_9000005572_40822cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40822cztM0_level2_quad_clean.evt
Size (bytes)331,868,16087,684,480
Size316.5 MB 83.6 MB
Events in quadrant A2,894,477598,910
Events in quadrant B2,307,134622,609
Events in quadrant C2,492,388582,517
Events in quadrant D4,205,040504,299

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115603
B0100522
C0103282
D0159502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4949280.565771%
B4949130.262679%
C4949300.606183%
D49493817.698525%

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 6982 4950 22 22 0.32% 0.44%
B 6982 4950 2 2 0.03% 0.04%
C 6982 4950 30 30 0.43% 0.61%
D 6982 4950 442 442 6.33% 8.93%

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 470044 4021.36 568 557 116.7
A 6 10 83739 712.49 568 557 116.7
A 12 189 59295 503.12 568 557 116.7
B 0 190 29338 261.81 571 556 109.9
B 5 255 16111 141.49 571 556 109.9
B 12 111 13706 119.62 571 556 109.9
C 15 214 213021 1632.57 555 559 130.1
C 0 10 107014 818.01 555 559 130.1
C 13 61 3706 24.18 555 559 130.1
D 1 47 1104327 8422.89 533 518 131.0
D 12 79 420623 3205.72 533 518 131.0
D 2 249 387122 2950.08 533 518 131.0

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