ASTROSAT CZTI

Data Quality Report

Orbit 54512

Creation date: 2025-10-26T02:21:58.559468
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_54512cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54512cztM0_level2_quad_clean.evt
Size (bytes)458,513,28095,086,080
Size437.3 MB 90.7 MB
Events in quadrant A3,603,058632,380
Events in quadrant B4,027,612641,732
Events in quadrant C4,770,887585,503
Events in quadrant D4,059,027559,904

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151802
B0167672
C0188122
D0167482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65891332.018516%
B65884126.253795%
C65882944.462659%
D65881952.959927%

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 7539 6590 74 74 0.98% 1.12%
B 7538 6589 219 219 2.91% 3.32%
C 7538 6589 209 209 2.77% 3.17%
D 7538 6589 178 178 2.36% 2.70%

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 276604 1543.37 729 711 178.8
A 3 14 204918 1142.35 729 711 178.8
A 4 3 77241 428.11 729 711 178.8
B 5 185 935933 6085.16 711 683 153.7
B 0 213 91190 588.88 711 683 153.7
B 10 247 62500 402.21 711 683 153.7
C 4 5 1096533 5658.94 703 697 193.6
C 13 3 288164 1484.49 703 697 193.6
C 12 252 256069 1318.75 703 697 193.6
D 3 12 409512 2041.83 707 677 200.2
D 10 181 356943 1779.28 707 677 200.2
D 14 52 118242 587.15 707 677 200.2

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