ASTROSAT CZTI

Data Quality Report

Orbit 56303

Creation date: 2026-02-23T14:29:37.068620
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_049T01_9000006552_56303cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56303cztM0_level2_quad_clean.evt
Size (bytes)646,185,60083,113,920
Size616.3 MB 79.3 MB
Events in quadrant A11,570,243322,817
Events in quadrant B4,415,542649,888
Events in quadrant C4,202,656566,633
Events in quadrant D3,250,640545,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386621
B0171301
C0169201
D0139341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6193325052.478605%
B61932864.618117%
C61944026.490152%
D61941242.001937%

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 7353 6194 3125 3125 42.50% 50.45%
B 7353 6194 139 139 1.89% 2.24%
C 7354 6195 269 269 3.66% 4.34%
D 7354 6195 43 43 0.58% 0.69%

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 32 4437018 34304.51 519 507 129.3
A 12 115 1305512 10090.71 519 507 129.3
A 4 95 1292650 9991.26 519 507 129.3
B 5 172 866562 6024.79 673 648 143.7
B 5 185 447883 3111.74 673 648 143.7
B 0 183 131576 910.96 673 648 143.7
C 5 250 983566 5470.39 657 651 179.7
C 15 198 210337 1167.0 657 651 179.7
C 12 252 179558 995.7 657 651 179.7
D 8 160 144639 777.97 658 628 185.1
D 2 120 121147 651.06 658 628 185.1
D 2 249 91921 493.18 658 628 185.1

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