ASTROSAT CZTI

Data Quality Report

Orbit 40951

Creation date: 2024-06-27T22:22:36.510875
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_052T04_9000005582_40951cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40951cztM0_level2_quad_clean.evt
Size (bytes)310,898,88092,946,240
Size296.5 MB 88.6 MB
Events in quadrant A2,857,483633,682
Events in quadrant B2,413,012642,537
Events in quadrant C2,791,466604,112
Events in quadrant D3,026,053557,140

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117532
B0108321
C0116031
D0128311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A539360.111255%
B539340.074170%
C5393480.890043%
D53931412.614500%

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 7274 5394 1 1 0.01% 0.02%
B 7274 5394 0 0 0.00% 0.00%
C 7274 5394 45 45 0.62% 0.83%
D 7274 5394 134 134 1.84% 2.48%

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 479778 3837.13 610 598 124.9
A 7 3 15881 122.38 610 598 124.9
A 13 254 7640 56.39 610 598 124.9
B 3 112 34890 298.55 602 587 114.9
B 0 190 16890 141.89 602 587 114.9
B 12 111 14477 120.89 602 587 114.9
C 15 214 247070 1821.67 582 586 135.3
C 12 249 134197 987.47 582 586 135.3
C 0 10 84882 623.0 582 586 135.3
D 13 249 575677 4075.55 580 563 141.1
D 2 249 77652 546.29 580 563 141.1
D 1 52 32700 227.74 580 563 141.1

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