ASTROSAT CZTI

Data Quality Report

Orbit 58161

Creation date: 2026-06-30T17:23:25.032535
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_042T02_9000006586_58161cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58161cztM0_level2_quad_clean.evt
Size (bytes)677,283,84085,213,440
Size645.9 MB 81.3 MB
Events in quadrant A3,074,432668,606
Events in quadrant B14,506,754211,456
Events in quadrant C3,186,840635,885
Events in quadrant D3,772,642589,453

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139842
B0478786
C0143762
D0158172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6814951.394188%
B6813508174.578013%
C68131041.526493%
D68131712.509908%

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 7789 6814 0 0 0.00% 0.00%
B 7787 6812 4638 4638 59.56% 68.09%
C 7788 6813 16 16 0.21% 0.23%
D 7788 6813 86 86 1.10% 1.26%

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 4 3 18231 91.54 779 760 190.9
A 8 249 11872 58.22 779 760 190.9
A 3 245 11569 56.63 779 760 190.9
B 10 128 12522111 130974.65 445 429 95.6
B 5 185 57851 600.62 445 429 95.6
B 0 79 33768 348.72 445 429 95.6
C 12 252 71326 343.75 752 748 205.3
C 15 208 59733 287.29 752 748 205.3
C 14 254 35752 170.49 752 748 205.3
D 8 160 193580 921.41 745 712 209.3
D 2 249 116433 552.85 745 712 209.3
D 2 31 111153 527.62 745 712 209.3

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