ASTROSAT CZTI

Data Quality Report

Orbit 58815

Creation date: 2026-08-11T13:14:48.673699
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_106T01_9000006596_58815cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58815cztM0_level2_quad_clean.evt
Size (bytes)672,670,08091,846,080
Size641.5 MB 87.6 MB
Events in quadrant A3,817,803663,022
Events in quadrant B4,315,619696,825
Events in quadrant C4,155,590630,227
Events in quadrant D12,080,458314,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159592
B0174122
C0170742
D0405552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68322113.088407%
B68334496.571052%
C68333264.770964%
D6833355151.968389%

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 8752 6834 65 65 0.74% 0.95%
B 8753 6835 141 141 1.61% 2.06%
C 8753 6835 188 188 2.15% 2.75%
D 8753 6835 3548 3548 40.53% 51.91%

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 10 248 294183 1513.18 787 766 193.9
A 15 233 265494 1365.23 787 766 193.9
A 3 14 60998 310.62 787 766 193.9
B 5 172 481210 2897.15 770 742 165.8
B 4 236 232326 1396.42 770 742 165.8
B 5 185 193183 1160.39 770 742 165.8
C 13 3 605015 2935.32 753 747 205.9
C 6 223 170802 826.07 753 747 205.9
C 9 38 133899 646.81 753 747 205.9
D 12 110 7403393 41246.21 627 599 179.5
D 2 249 1605902 8944.28 627 599 179.5
D 2 31 340328 1892.87 627 599 179.5

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