ASTROSAT CZTI

Data Quality Report

Orbit 33929

Creation date: 2024-06-27T20:54:28.208132
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/AS1T04_088T01_9000004846_33929cztM0_level2.evt modeM0/AS1T04_088T01_9000004846_33929cztM0_level2_quad_clean.evt
Size (bytes)489,326,40078,442,560
Size466.7 MB 74.8 MB
Events in quadrant A2,655,716528,610
Events in quadrant B2,836,256528,060
Events in quadrant C2,930,296509,923
Events in quadrant D6,061,666461,601

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106062
B0112931
C0115661
D0214611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4945210.424671%
B4945360.728008%
C4945581.172902%
D494577115.591507%

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 6948 4946 10 10 0.14% 0.20%
B 6948 4946 20 20 0.29% 0.40%
C 6948 4946 50 50 0.72% 1.01%
D 6948 4946 718 718 10.33% 14.52%

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 15 169 143840 1138.06 637 627 125.8
A 13 6 36807 287.51 637 627 125.8
A 13 254 8578 63.18 637 627 125.8
B 5 172 186756 1603.46 620 606 116.1
B 0 189 32779 277.13 620 606 116.1
B 0 190 31084 262.53 620 606 116.1
C 15 214 219860 1616.98 599 604 135.6
C 3 233 148145 1088.09 599 604 135.6
C 0 10 147889 1086.2 599 604 135.6
D 1 52 1540029 10863.82 590 576 141.7
D 8 195 1020026 7194.19 590 576 141.7
D 10 118 468685 3303.41 590 576 141.7

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