ASTROSAT CZTI

Data Quality Report

Orbit 59253

Creation date: 2026-09-10T00:11:17.879474
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/AS1T05_271T01_9000006604_59253cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59253cztM0_level2_quad_clean.evt
Size (bytes)569,969,28093,542,400
Size543.6 MB 89.2 MB
Events in quadrant A3,210,676664,580
Events in quadrant B3,308,756718,846
Events in quadrant C3,391,519641,366
Events in quadrant D10,691,154362,505

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140392
B0142562
C0143682
D0361734

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63821492.334691%
B63821522.381699%
C63821151.801943%
D6381289545.369064%

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 7597 6383 63 63 0.83% 0.99%
B 7597 6383 65 65 0.86% 1.02%
C 7597 6383 63 63 0.83% 0.99%
D 7596 6382 2591 2591 34.11% 40.60%

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 188124 1042.0 736 719 179.9
A 0 24 74799 411.89 736 719 179.9
A 15 233 48896 267.87 736 719 179.9
B 4 236 143560 914.17 731 704 156.3
B 4 201 118149 751.56 731 704 156.3
B 10 247 89769 569.95 731 704 156.3
C 12 252 419524 2114.18 726 719 198.1
C 14 254 42898 212.93 726 719 198.1
C 13 3 22544 110.18 726 719 198.1
D 12 110 7949334 44547.34 629 601 178.4
D 3 12 181186 1012.06 629 601 178.4
D 13 138 31894 175.38 629 601 178.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct