ASTROSAT CZTI

Data Quality Report

Orbit 55375

Creation date: 2025-12-23T03:04:57.336871
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_009T01_9000006534_55375cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55375cztM0_level2_quad_clean.evt
Size (bytes)486,069,12096,730,560
Size463.6 MB 92.2 MB
Events in quadrant A7,079,145583,310
Events in quadrant B3,369,389686,784
Events in quadrant C3,032,175617,882
Events in quadrant D3,994,094576,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256432
B0149642
C0142332
D0166552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A666788213.229339%
B6667971.454927%
C6667891.334933%
D66672033.044848%

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 7642 6667 688 688 9.00% 10.32%
B 7642 6668 19 19 0.25% 0.28%
C 7642 6668 32 32 0.42% 0.48%
D 7642 6668 113 113 1.48% 1.69%

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 4 159 3763477 22069.95 690 675 170.5
A 0 8 458862 2687.4 690 675 170.5
A 12 115 83553 486.1 690 675 170.5
B 0 199 333239 2195.33 708 681 151.5
B 10 247 107406 704.53 708 681 151.5
B 5 185 73322 479.53 708 681 151.5
C 12 249 101310 517.41 707 699 194.5
C 13 3 65037 330.87 707 699 194.5
C 12 250 25468 127.38 707 699 194.5
D 11 176 377413 1922.25 699 670 196.0
D 2 249 230854 1174.46 699 670 196.0
D 3 12 109532 555.44 699 670 196.0

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