ASTROSAT CZTI

Data Quality Report

Orbit 53945

Creation date: 2025-09-18T10:46:27.321334
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_057T04_9000006508_53945cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53945cztM0_level2_quad_clean.evt
Size (bytes)524,545,92051,762,240
Size500.2 MB 49.4 MB
Events in quadrant A2,294,292434,928
Events in quadrant B3,545,631420,077
Events in quadrant C3,841,790346,945
Events in quadrant D9,371,72337,928

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011076967
B0157912014
C0164361408
D0339152926

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01079
B010810
C01068
D010813

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4684721.537148%
B464548110.355221%
C468677316.495945%
D4591419691.396210%

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 6662 4758 32 32 0.48% 0.67%
B 6649 4707 375 375 5.64% 7.97%
C 6664 4759 727 727 10.91% 15.28%
D 6651 4625 2521 2521 37.90% 54.51%

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 0 8 117359 973.76 482 470 120.0
A 3 14 105971 878.89 482 470 120.0
A 15 174 89508 741.75 482 470 120.0
B 0 213 1371240 13803.43 462 447 99.3
B 5 236 172276 1730.26 462 447 99.3
B 4 81 39805 396.32 462 447 99.3
C 1 241 1967883 16848.51 421 417 116.8
C 15 148 71107 605.36 421 417 116.8
C 14 246 36093 305.51 421 417 116.8
D 8 176 6926501 225003.43 101 96 30.8
D 3 12 1055096 34271.55 101 96 30.8
D 2 165 675354 21935.67 101 96 30.8

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