ASTROSAT CZTI

Data Quality Report

Orbit 56726

Creation date: 2026-03-24T00:32:20.624474
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_083T05_9000006560_56726cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56726cztM0_level2_quad_clean.evt
Size (bytes)611,910,72085,700,160
Size583.6 MB 81.7 MB
Events in quadrant A8,776,039459,029
Events in quadrant B3,728,755661,839
Events in quadrant C6,280,043477,576
Events in quadrant D3,368,917549,964

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305421
B0157511
C0232261
D0147202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6402194930.443611%
B64031512.358270%
C6403124119.381540%
D6402841.312090%

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 7482 6403 1811 1811 24.20% 28.28%
B 7483 6404 66 66 0.88% 1.03%
C 7483 6404 1195 1195 15.97% 18.66%
D 7482 6403 87 87 1.16% 1.36%

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 10 251 5303420 35535.5 599 584 149.2
A 3 14 645620 4322.53 599 584 149.2
A 3 62 472839 3164.69 599 584 149.2
B 5 185 344508 2348.54 680 654 146.4
B 10 247 271451 1849.56 680 654 146.4
B 4 206 221876 1510.96 680 654 146.4
C 15 230 3116174 19045.25 597 590 163.6
C 13 3 391730 2391.0 597 590 163.6
C 12 249 150511 916.45 597 590 163.6
D 2 249 408799 2179.1 655 625 187.3
D 2 207 144937 770.43 655 625 187.3
D 5 113 62273 329.12 655 625 187.3

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