ASTROSAT CZTI

Data Quality Report

Orbit 53586

Creation date: 2025-08-24T17:02:02.752593
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_004T05_9000006502_53586cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53586cztM0_level2_quad_clean.evt
Size (bytes)879,353,28083,655,360
Size838.6 MB 79.8 MB
Events in quadrant A8,041,172495,509
Events in quadrant B6,495,092650,036
Events in quadrant C7,209,659580,358
Events in quadrant D10,304,982355,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282872
B0236662
C0259472
D0350202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6469204631.627763%
B6468105016.233766%
C646893014.378479%
D6468301146.552257%

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 7633 6468 1448 1448 18.97% 22.39%
B 7633 6468 607 607 7.95% 9.38%
C 7633 6469 634 634 8.31% 9.80%
D 7633 6468 2375 2375 31.11% 36.72%

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 3 62 4250751 26621.09 646 630 159.7
A 3 63 415543 2598.85 646 630 159.7
A 15 174 407824 2550.5 646 630 159.7
B 4 206 1934649 12781.52 713 691 151.3
B 10 28 831847 5493.11 713 691 151.3
B 8 234 258961 1706.91 713 691 151.3
C 13 3 1331629 6950.73 697 689 191.5
C 15 224 1324258 6912.24 697 689 191.5
C 1 241 1041864 5437.46 697 689 191.5
D 8 176 7082863 45413.5 538 513 156.0
D 7 70 294503 1885.13 538 513 156.0
D 13 153 204252 1306.42 538 513 156.0

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