ASTROSAT CZTI

Data Quality Report

Orbit 56068

Creation date: 2026-02-09T15:22:59.832642
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_083T03_9000006548_56068cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56068cztM0_level2_quad_clean.evt
Size (bytes)422,115,84097,096,320
Size402.6 MB 92.6 MB
Events in quadrant A4,337,212621,841
Events in quadrant B3,108,271686,846
Events in quadrant C3,786,788602,793
Events in quadrant D3,869,401559,563

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174152
B0140152
C0163102
D0163612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67282854.236029%
B67281191.768728%
C67282704.013080%
D67282754.087396%

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 7683 6728 184 184 2.39% 2.73%
B 7683 6728 4 4 0.05% 0.06%
C 7683 6728 155 155 2.02% 2.30%
D 7683 6728 142 142 1.85% 2.11%

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 12 115 499763 2807.88 719 698 177.7
A 15 32 496269 2788.22 719 698 177.7
A 4 249 306657 1721.41 719 698 177.7
B 10 247 63622 411.8 721 694 152.8
B 9 254 63057 408.1 721 694 152.8
B 0 213 31848 203.87 721 694 152.8
C 13 3 824160 4249.69 703 693 193.8
C 6 223 122029 626.18 703 693 193.8
C 12 252 58457 298.1 703 693 193.8
D 11 129 539148 2737.29 699 668 196.7
D 6 42 136632 691.16 699 668 196.7
D 2 120 126141 637.83 699 668 196.7

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