ASTROSAT CZTI

Data Quality Report

Orbit 58948

Creation date: 2026-08-20T12:13:21.094569
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_004T07_9000006598_58948cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58948cztM0_level2_quad_clean.evt
Size (bytes)482,250,24099,852,480
Size459.9 MB 95.2 MB
Events in quadrant A3,876,496661,007
Events in quadrant B4,178,810701,707
Events in quadrant C4,750,676628,456
Events in quadrant D4,543,457581,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158232
B0166962
C0187562
D0178305

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64641632.521658%
B64643255.027847%
C64642113.264233%
D64632954.564444%

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 7684 6464 124 124 1.61% 1.92%
B 7684 6464 188 188 2.45% 2.91%
C 7684 6464 187 187 2.43% 2.89%
D 7682 6463 283 283 3.68% 4.38%

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 14 238 659295 3600.94 742 721 182.9
A 3 254 246380 1343.21 742 721 182.9
A 5 113 19627 103.37 742 721 182.9
B 4 171 317466 2049.63 729 703 154.5
B 5 185 256667 1656.23 729 703 154.5
B 6 255 215060 1387.01 729 703 154.5
C 9 53 941116 4827.45 714 706 194.8
C 12 252 423421 2169.94 714 706 194.8
C 4 5 245701 1257.64 714 706 194.8
D 11 129 991918 4957.95 707 677 199.9
D 6 239 278299 1388.6 707 677 199.9
D 7 222 139563 694.67 707 677 199.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct