ASTROSAT CZTI

Data Quality Report

Orbit 58935

Creation date: 2026-08-19T15:19:29.403770
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_004T07_9000006598_58935cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58935cztM0_level2_quad_clean.evt
Size (bytes)842,803,20081,224,640
Size803.8 MB 77.5 MB
Events in quadrant A9,216,775452,749
Events in quadrant B4,117,065694,707
Events in quadrant C4,167,624629,142
Events in quadrant D13,185,931223,557

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318722
B0166422
C0168917
D0437122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6581242836.894089%
B65814486.807476%
C65802734.148936%
D6580458269.635258%

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 7691 6581 2060 2060 26.78% 31.30%
B 7691 6581 190 190 2.47% 2.89%
C 7690 6580 178 178 2.31% 2.71%
D 7689 6579 4164 4164 54.16% 63.29%

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 14 238 5548621 34769.15 655 638 159.6
A 15 233 1008044 6313.4 655 638 159.6
A 0 24 46668 288.47 655 638 159.6
B 4 171 618506 3842.05 750 722 160.8
B 4 236 309423 1919.84 750 722 160.8
B 5 172 55990 343.72 750 722 160.8
C 4 5 552981 2745.13 735 727 201.2
C 15 208 353789 1754.99 735 727 201.2
C 12 252 231764 1148.43 735 727 201.2
D 12 110 10712983 70806.43 535 512 151.3
D 11 129 136440 898.45 535 512 151.3
D 2 252 47683 311.79 535 512 151.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct