ASTROSAT CZTI

Data Quality Report

Orbit 58937

Creation date: 2026-08-19T18:19:40.199266
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_58937cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58937cztM0_level2_quad_clean.evt
Size (bytes)761,731,20080,556,480
Size726.4 MB 76.8 MB
Events in quadrant A3,427,645654,231
Events in quadrant B4,733,643628,579
Events in quadrant C5,075,612589,699
Events in quadrant D14,442,739102,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146301
B0186151
C0197532
D0473401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66511522.285371%
B665272710.929044%
C66515598.404751%
D6651562884.618854%

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 7181 6651 10 10 0.14% 0.15%
B 7181 6652 413 413 5.75% 6.21%
C 7181 6652 399 399 5.56% 6.00%
D 7180 6650 5218 5218 72.67% 78.47%

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 293809 1581.83 750 730 185.3
A 13 248 47814 254.12 750 730 185.3
A 15 233 38368 203.14 750 730 185.3
B 5 185 1207841 8080.31 695 667 149.4
B 4 171 289987 1936.59 695 667 149.4
B 4 236 278141 1857.29 695 667 149.4
C 15 219 856542 4386.4 708 698 195.1
C 4 5 555874 2845.41 708 698 195.1
C 12 252 356326 1822.68 708 698 195.1
D 12 110 12001029 99141.16 425 406 121.0
D 11 129 337722 2786.68 425 406 121.0
D 7 222 205625 1695.38 425 406 121.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct