ASTROSAT CZTI

Data Quality Report

Orbit 46401

Creation date: 2024-06-27T23:22:43.608356
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/AS1A13_070T04_9000006204_46401cztM0_level2.fits modeM0/AS1A13_070T04_9000006204_46401cztM0_level2_quad_clean.evt
Size (bytes)528,560,640110,220,480
Size504.1 MB 105.1 MB
Events in quadrant A6,425,724748,701
Events in quadrant B3,810,021783,013
Events in quadrant C3,858,496734,003
Events in quadrant D4,973,013623,178

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232572
B0155162
C0157562
D0191332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64243385.261519%
B64243325.168120%
C64232754.281488%
D642379312.346256%

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 7574 6425 46 46 0.61% 0.72%
B 7574 6424 156 156 2.06% 2.43%
C 7573 6424 166 166 2.19% 2.58%
D 7573 6424 510 510 6.73% 7.94%

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 3190684 20060.4 765 749 159.0
A 0 247 207892 1302.65 765 749 159.0
A 13 248 56391 349.91 765 749 159.0
B 5 172 343478 2317.0 761 739 147.9
B 4 171 308538 2080.79 761 739 147.9
B 5 255 54378 362.61 761 739 147.9
C 14 254 720213 4200.96 733 738 171.3
C 9 54 146034 848.37 733 738 171.3
C 12 2 54784 315.57 733 738 171.3
D 5 235 1704190 9529.06 714 690 178.8
D 13 249 196842 1097.24 714 690 178.8
D 2 249 104871 582.77 714 690 178.8

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