ASTROSAT CZTI

Data Quality Report

Orbit 51905

Creation date: 2025-05-03T13:10:51.333798
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/AS1C09_011T05_9000006466_51905cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51905cztM0_level2_quad_clean.evt
Size (bytes)603,023,04096,143,040
Size575.1 MB 91.7 MB
Events in quadrant A6,874,045593,245
Events in quadrant B5,516,123662,125
Events in quadrant C4,122,484623,269
Events in quadrant D5,271,009548,584

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252921
B0213021
C0172661
D0207941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A694673810.624820%
B69465107.342355%
C69461171.684423%
D69465948.551684%

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 7036 6948 558 558 7.93% 8.03%
B 7036 6948 187 187 2.66% 2.69%
C 7036 6948 63 63 0.90% 0.91%
D 7036 6948 471 471 6.69% 6.78%

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 7 64 1031751 6029.5 699 683 171.0
A 12 3 547536 3197.9 699 683 171.0
A 11 3 494386 2887.09 699 683 171.0
B 10 254 1418244 9327.29 711 688 152.0
B 12 32 429773 2823.31 711 688 152.0
B 5 172 249599 1637.79 711 688 152.0
C 15 224 308541 1592.99 704 698 193.2
C 15 248 155257 799.8 704 698 193.2
C 13 3 149307 769.01 704 698 193.2
D 8 176 715729 3759.38 680 652 190.2
D 3 12 680423 3573.76 680 652 190.2
D 2 249 246931 1294.76 680 652 190.2

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