ASTROSAT CZTI

Data Quality Report

Orbit 40503

Creation date: 2024-06-27T22:16:53.504775
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_022T01_9000005540_40503cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40503cztM0_level2_quad_clean.evt
Size (bytes)321,995,52086,232,960
Size307.1 MB 82.2 MB
Events in quadrant A2,708,603606,670
Events in quadrant B2,325,161620,253
Events in quadrant C2,775,837573,214
Events in quadrant D3,720,108461,126

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109523
B0101672
C0112092
D0144062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498760.120313%
B4987140.280730%
C4987801.604171%
D498795719.189894%

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 6990 4988 3 3 0.04% 0.06%
B 6990 4988 10 10 0.14% 0.20%
C 6990 4988 76 76 1.09% 1.52%
D 6990 4988 222 222 3.18% 4.45%

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 458372 3921.02 575 564 116.8
A 13 248 8726 69.91 575 564 116.8
A 7 3 7459 59.05 575 564 116.8
B 5 255 40357 366.26 567 553 108.7
B 3 112 29619 267.45 567 553 108.7
B 4 171 27391 246.95 567 553 108.7
C 14 254 378847 2982.88 546 549 126.8
C 15 214 219007 1722.54 546 549 126.8
C 9 146 21759 167.24 546 549 126.8
D 2 250 678991 5426.08 508 495 125.0
D 12 128 327233 2613.0 508 495 125.0
D 12 227 219737 1753.33 508 495 125.0

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