ASTROSAT CZTI

Data Quality Report

Orbit 56620

Creation date: 2026-03-16T20:43:02.429991
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_083T06_9000006558_56620cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56620cztM0_level2_quad_clean.evt
Size (bytes)383,097,60086,771,520
Size365.4 MB 82.8 MB
Events in quadrant A2,915,235568,434
Events in quadrant B3,055,636604,037
Events in quadrant C4,268,038532,043
Events in quadrant D3,477,406505,809

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131781
B0133382
C0170121
D0145301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5975570.953975%
B5975941.573222%
C59751352.259414%
D59751191.991632%

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 6960 5976 25 25 0.36% 0.42%
B 6960 5976 49 49 0.70% 0.82%
C 6960 5976 86 86 1.24% 1.44%
D 6960 5976 108 108 1.55% 1.81%

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 13 248 150328 958.12 630 612 156.3
A 10 251 128918 821.1 630 612 156.3
A 4 249 105772 672.98 630 612 156.3
B 10 247 127053 943.05 622 600 134.1
B 8 128 106990 793.43 622 600 134.1
B 0 231 74032 547.63 622 600 134.1
C 1 16 1285837 7743.12 601 595 166.0
C 13 3 245468 1475.27 601 595 166.0
C 9 38 173860 1043.86 601 595 166.0
D 2 249 486771 2848.65 604 578 170.7
D 3 12 146956 857.64 604 578 170.7
D 6 239 143864 839.53 604 578 170.7

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