ASTROSAT CZTI

Data Quality Report

Orbit 58862

Creation date: 2026-08-15T13:12:16.301627
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_58862cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58862cztM0_level2_quad_clean.evt
Size (bytes)714,453,12087,289,920
Size681.4 MB 83.2 MB
Events in quadrant A7,693,934517,171
Events in quadrant B10,173,822427,196
Events in quadrant C3,953,137639,373
Events in quadrant D4,120,078604,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273082
B0347244
C0162202
D0165272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6520173626.625767%
B6519318248.811167%
C65202183.343558%
D65202033.113497%

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 7640 6520 1359 1359 17.79% 20.84%
B 7640 6520 2239 2239 29.31% 34.34%
C 7640 6520 65 65 0.85% 1.00%
D 7640 6520 101 101 1.32% 1.55%

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 15 233 4076732 23754.68 701 684 171.6
A 3 14 698564 4067.15 701 684 171.6
A 3 61 48715 279.92 701 684 171.6
B 5 172 7111582 50989.77 653 630 139.5
B 5 185 124519 888.36 653 630 139.5
B 10 247 112591 802.83 653 630 139.5
C 9 38 578851 2826.19 744 737 204.6
C 6 223 131437 638.94 744 737 204.6
C 12 252 125403 609.45 744 737 204.6
D 5 38 361710 1697.0 752 719 212.7
D 12 110 277447 1300.88 752 719 212.7
D 11 129 192640 902.21 752 719 212.7

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