ASTROSAT CZTI

Data Quality Report

Orbit 52137

Creation date: 2025-05-19T04:16:52.544148
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_011T07_9000006470_52137cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52137cztM0_level2_quad_clean.evt
Size (bytes)999,547,20074,456,640
Size953.2 MB 71.0 MB
Events in quadrant A3,837,981665,217
Events in quadrant B5,347,287672,921
Events in quadrant C10,031,163429,148
Events in quadrant D17,243,6811,243

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162721
B0207214
C03470212
D05599124

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69691381.980198%
B69675638.080953%
C6965265838.162240%
D6966695799.870801%

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 7594 6970 100 100 1.32% 1.43%
B 7594 6969 388 388 5.11% 5.57%
C 7594 6968 2199 2199 28.96% 31.56%
D 7592 6965 6582 6582 86.70% 94.50%

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 295728 1616.54 727 709 182.5
A 14 254 139481 760.39 727 709 182.5
A 3 114 136708 745.2 727 709 182.5
B 5 172 962357 6427.6 706 681 149.6
B 5 185 347529 2318.25 706 681 149.6
B 0 216 275451 1836.49 706 681 149.6
C 15 224 4213880 25752.75 583 579 163.6
C 15 193 2368992 14476.33 583 579 163.6
C 13 3 291743 1779.67 583 579 163.6
D 6 42 11268264 194330.43 200 190 58.0
D 15 94 4529267 78108.96 200 190 58.0
D 12 1 104676 1801.98 200 190 58.0

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