ASTROSAT CZTI

Data Quality Report

Orbit 53848

Creation date: 2025-09-11T08:08:04.378431
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/AS1A14_057T04_9000006508_53848cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53848cztM0_level2_quad_clean.evt
Size (bytes)704,482,56090,717,120
Size671.8 MB 86.5 MB
Events in quadrant A3,253,951670,450
Events in quadrant B3,524,752703,930
Events in quadrant C8,511,504504,122
Events in quadrant D10,279,182410,490

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141652
B0149652
C0298352
D0349522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6559540.823296%
B65591472.241195%
C6560162824.817073%
D6560235135.838415%

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 7764 6559 33 33 0.43% 0.50%
B 7764 6559 60 60 0.77% 0.91%
C 7765 6560 1626 1626 20.94% 24.79%
D 7764 6559 2472 2472 31.84% 37.69%

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 8 6 118716 650.31 733 713 181.5
A 0 8 105141 575.5 733 713 181.5
A 4 249 42926 232.63 733 713 181.5
B 0 171 156666 1009.89 725 702 154.4
B 10 247 137814 887.82 725 702 154.4
B 0 213 126228 812.8 725 702 154.4
C 1 241 3675982 20654.53 646 640 177.9
C 15 224 1930589 10845.85 646 640 177.9
C 9 38 83648 466.48 646 640 177.9
D 15 93 6454117 38662.3 584 559 166.9
D 10 172 675833 4045.47 584 559 166.9
D 8 176 171055 1021.42 584 559 166.9

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