ASTROSAT CZTI

Data Quality Report

Orbit 56160

Creation date: 2026-02-13T23:01:49.812029
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_083T04_9000006550_56160cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56160cztM0_level2_quad_clean.evt
Size (bytes)643,348,80079,009,920
Size613.5 MB 75.3 MB
Events in quadrant A5,381,219474,565
Events in quadrant B3,388,286631,915
Events in quadrant C3,159,588563,879
Events in quadrant D11,401,100286,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204511
B0145301
C0143751
D0381901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6229140922.620003%
B62301592.552167%
C62301031.653291%
D6230320551.444623%

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 7188 6228 572 572 7.96% 9.18%
B 7190 6231 51 51 0.71% 0.82%
C 7190 6231 98 98 1.36% 1.57%
D 7190 6231 2699 2699 37.54% 43.32%

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 9 250 2312897 16777.27 553 540 137.8
A 15 32 437812 3172.62 553 540 137.8
A 0 8 116033 837.96 553 540 137.8
B 5 185 196657 1410.52 651 627 139.0
B 5 172 120833 864.93 651 627 139.0
B 0 157 79173 565.17 651 627 139.0
C 12 252 651524 3780.01 629 620 172.2
C 6 223 18210 102.15 629 620 172.2
C 15 230 12273 67.67 629 620 172.2
D 8 129 8278791 64572.62 447 426 128.2
D 8 240 963562 7512.62 447 426 128.2
D 2 62 150626 1171.58 447 426 128.2

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