ASTROSAT CZTI

Data Quality Report

Orbit 42904

Creation date: 2024-06-27T22:45:37.565617
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/AS1T05_143T01_9000005830_42904cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42904cztM0_level2_quad_clean.evt
Size (bytes)370,981,44091,641,600
Size353.8 MB 87.4 MB
Events in quadrant A3,404,317617,297
Events in quadrant B2,505,996639,868
Events in quadrant C2,890,784592,077
Events in quadrant D4,490,669529,818

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134822
B0114282
C0121962
D0173442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56611452.561385%
B566190.158983%
C5661410.724254%
D56613105.476064%

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 7304 5662 101 101 1.38% 1.78%
B 7304 5662 3 3 0.04% 0.05%
C 7304 5662 44 44 0.60% 0.78%
D 7304 5662 297 297 4.07% 5.25%

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 615140 4819.5 616 601 127.5
A 15 237 382647 2996.18 616 601 127.5
A 2 79 9320 68.38 616 601 127.5
B 0 229 56996 471.24 616 598 119.7
B 3 112 16123 129.72 616 598 119.7
B 12 111 15041 120.68 616 598 119.7
C 15 214 248558 1774.01 598 601 139.8
C 12 2 145537 1036.95 598 601 139.8
C 14 254 136613 973.1 598 601 139.8
D 1 52 978134 6887.1 588 571 141.9
D 2 249 388783 2735.02 588 571 141.9
D 1 47 374722 2635.96 588 571 141.9

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