ASTROSAT CZTI

Data Quality Report

Orbit 58920

Creation date: 2026-08-18T14:36:06.925967
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_58920cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58920cztM0_level2_quad_clean.evt
Size (bytes)682,165,44093,778,560
Size650.6 MB 89.4 MB
Events in quadrant A6,992,793576,070
Events in quadrant B4,013,666709,351
Events in quadrant C3,650,804640,143
Events in quadrant D10,087,901458,868

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251892
B0162112
C0153572
D0345352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6534127219.467401%
B65343705.662687%
C65342003.060912%
D6534198930.440771%

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 7669 6534 929 929 12.11% 14.22%
B 7669 6534 136 136 1.77% 2.08%
C 7669 6535 68 68 0.89% 1.04%
D 7669 6535 1837 1837 23.95% 28.11%

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 14 238 3652631 20525.27 732 713 177.9
A 15 233 369548 2073.0 732 713 177.9
A 13 248 63526 353.03 732 713 177.9
B 5 172 212703 1317.05 757 730 160.9
B 4 236 200746 1242.76 757 730 160.9
B 0 153 178877 1106.88 757 730 160.9
C 6 223 166402 822.2 743 736 201.5
C 12 252 139935 690.84 743 736 201.5
C 4 5 104584 515.39 743 736 201.5
D 12 110 6319128 32112.93 689 660 196.8
D 7 222 483035 2451.62 689 660 196.8
D 11 129 279253 1415.92 689 660 196.8

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