ASTROSAT CZTI

Data Quality Report

Orbit 59039

Creation date: 2026-08-28T00:32:07.877624
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_004T02_9000006600_59039cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59039cztM0_level2_quad_clean.evt
Size (bytes)853,009,92090,095,040
Size813.5 MB 85.9 MB
Events in quadrant A3,771,008703,038
Events in quadrant B5,065,109710,650
Events in quadrant C4,822,292677,130
Events in quadrant D17,339,544118,727

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163332
B0200942
C0196182
D0565192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74353044.088769%
B743578910.611970%
C74363354.505110%
D7436616782.934373%

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 8630 7437 36 36 0.42% 0.48%
B 8630 7437 305 305 3.53% 4.10%
C 8631 7438 141 141 1.63% 1.90%
D 8631 7438 5735 5735 66.45% 77.10%

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 207509 999.97 848 824 206.7
A 0 24 89523 429.14 848 824 206.7
A 15 233 57165 272.58 848 824 206.7
B 2 249 991903 5661.49 817 785 175.1
B 4 236 511451 2917.04 817 785 175.1
B 5 185 78929 446.38 817 785 175.1
C 15 219 946329 4247.19 820 814 222.6
C 12 252 220458 986.63 820 814 222.6
C 6 13 181003 809.4 820 814 222.6
D 12 1 15873478 176346.99 318 304 90.0
D 6 239 52209 576.65 318 304 90.0
D 2 120 43729 482.44 318 304 90.0

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