ASTROSAT CZTI

Data Quality Report

Orbit 58249

Creation date: 2026-07-04T11:13:15.870796
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_044T03_9000006588_58249cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58249cztM0_level2_quad_clean.evt
Size (bytes)614,283,84088,773,120
Size585.8 MB 84.7 MB
Events in quadrant A2,888,080626,647
Events in quadrant B6,995,273590,573
Events in quadrant C3,152,854596,952
Events in quadrant D9,205,294426,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133031
B0252791
C0140931
D0318051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6415450.701481%
B6416101015.741895%
C64161051.636534%
D6416174927.259975%

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 7490 6416 4 4 0.05% 0.06%
B 7491 6417 830 830 11.08% 12.93%
C 7491 6417 62 62 0.83% 0.97%
D 7491 6417 1694 1694 22.61% 26.40%

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 3 14 77931 443.58 704 688 174.1
A 3 245 21763 121.03 704 688 174.1
A 13 248 13236 72.06 704 688 174.1
B 4 206 3131242 21852.75 669 645 143.3
B 2 249 591650 4125.44 669 645 143.3
B 0 156 107221 743.94 669 645 143.3
C 13 3 193073 1022.21 678 673 188.2
C 6 223 155716 823.73 678 673 188.2
C 7 2 37170 193.91 678 673 188.2
D 12 110 4330577 24677.66 620 594 175.5
D 3 224 1932784 11012.04 620 594 175.5
D 8 160 127846 725.24 620 594 175.5

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