ASTROSAT CZTI

Data Quality Report

Orbit 54565

Creation date: 2025-10-29T15:52:48.252953
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_127T09_9000006520_54565cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54565cztM0_level2_quad_clean.evt
Size (bytes)291,983,04066,522,240
Size278.5 MB 63.4 MB
Events in quadrant A2,583,129430,943
Events in quadrant B2,382,293463,719
Events in quadrant C3,285,895390,510
Events in quadrant D2,185,391393,886

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139542884
B0132282838
C0163283177
D0127212648

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012420
B012422
C012630
D012422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47491092.295220%
B4743440.927683%
C47153026.405090%
D4794270.563204%

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 6457 4988 92 92 1.42% 1.84%
B 6457 4989 21 21 0.33% 0.42%
C 6463 4984 252 252 3.90% 5.06%
D 6458 5035 20 20 0.31% 0.40%

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 11 3 317243 2506.97 505 493 126.3
A 0 8 110546 871.03 505 493 126.3
A 3 110 69191 543.72 505 493 126.3
B 10 14 147019 1334.57 505 487 109.8
B 2 249 99237 899.39 505 487 109.8
B 0 213 37103 333.49 505 487 109.8
C 12 254 772514 5796.69 479 475 133.2
C 13 3 319050 2391.95 479 475 133.2
C 14 254 205523 1539.56 479 475 133.2
D 15 94 86499 612.67 495 473 140.4
D 2 172 53709 379.14 495 473 140.4
D 5 173 40734 286.74 495 473 140.4

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