ASTROSAT CZTI

Data Quality Report

Orbit 53441

Creation date: 2025-10-15T20:07:19.991636
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_002T06_9000006496_53441cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53441cztM0_level2_quad_clean.evt
Size (bytes)691,770,24091,834,560
Size659.7 MB 87.6 MB
Events in quadrant A5,846,553633,158
Events in quadrant B4,628,152711,191
Events in quadrant C11,094,760386,785
Events in quadrant D3,534,419597,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217492
B0180942
C0374242
D0147792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A649373411.304482%
B64934486.899738%
C6492288144.377696%
D64921432.202711%

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 7658 6493 534 534 6.97% 8.22%
B 7658 6494 130 130 1.70% 2.00%
C 7657 6493 2621 2621 34.23% 40.37%
D 7657 6493 34 34 0.44% 0.52%

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 15 174 2268700 12700.21 733 718 178.6
A 0 8 330902 1848.96 733 718 178.6
A 4 249 76233 422.87 733 718 178.6
B 4 171 825731 5291.61 739 714 155.9
B 5 185 189246 1209.23 739 714 155.9
B 5 172 172165 1099.68 739 714 155.9
C 9 38 5379970 33009.89 600 594 163.0
C 15 224 1306759 8015.12 600 594 163.0
C 1 241 765676 4694.83 600 594 163.0
D 1 0 127163 612.63 735 702 206.4
D 2 172 104102 500.91 735 702 206.4
D 10 172 86546 415.87 735 702 206.4

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