ASTROSAT CZTI

Data Quality Report

Orbit 20260623_A14_042T02_9000006586_level2

Creation date: 2026-07-22T07:51:21.761881
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_9000006586cztM0_level2.fits modeM0/AS1A14_042T02_9000006586cztM0_level2_quad_clean.evt
Size (bytes)5,503,357,4402,092,302,720
Size5.1 GB 1.9 GB
Events in quadrant A35,146,2165,622,315
Events in quadrant B26,060,8303,812,078
Events in quadrant C33,819,1745,222,318
Events in quadrant D26,175,3083,367,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08060
B08080
C08080
D08080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134240
B0134240
C0134240
D0134240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014070850
B030244020
C014350000
D027474670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A661454106181.605251%
B66145521117931.926435%
C66145281401.230626%
D66145214658422.160943%

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 769485 661309 0 0 0.00% 0.00%
B 769484 642575 0 0 0.00% 0.00%
C 769484 661342 0 0 0.00% 0.00%
D 769484 660489 0 0 0.00% 0.00%

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 14 188 39041 9.83 9209 8441 3113.1
A 9 255 34534 8.38 9209 8441 3113.1
A 14 204 32100 7.6 9209 8441 3113.1
B 2 9 30170 14.75 6886 6490 1605.6
B 2 8 26623 12.54 6886 6490 1605.6
B 3 25 22278 9.83 6886 6490 1605.6
C 15 175 27884 6.39 9008 8146 3089.7
C 2 31 26976 6.09 9008 8146 3089.7
C 15 127 26671 6.0 9008 8146 3089.7
D 6 218 31369 9.97 7464 6613 2483.3
D 15 11 25500 7.61 7464 6613 2483.3
D 8 12 24542 7.22 7464 6613 2483.3

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