ASTROSAT CZTI

Data Quality Report

Orbit 59252

Creation date: 2026-09-09T22:13:33.122281
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_59252cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59252cztM0_level2_quad_clean.evt
Size (bytes)544,086,72095,797,440
Size518.9 MB 91.4 MB
Events in quadrant A3,155,194671,043
Events in quadrant B3,468,227710,728
Events in quadrant C3,359,361635,706
Events in quadrant D9,649,956427,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139892
B0148432
C0145262
D0332155

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65311111.699587%
B65322223.398653%
C6532881.347214%
D6531227134.772623%

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 7636 6532 39 39 0.51% 0.60%
B 7637 6533 120 120 1.57% 1.84%
C 7637 6533 33 33 0.43% 0.51%
D 7636 6532 2018 2018 26.43% 30.89%

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 179618 971.83 753 733 184.1
A 0 24 22162 116.42 753 733 184.1
A 7 78 20456 107.15 753 733 184.1
B 4 201 293791 1850.0 737 709 158.4
B 10 247 88056 551.35 737 709 158.4
B 5 185 63893 398.83 737 709 158.4
C 12 252 142825 708.35 734 727 200.6
C 15 1 120185 595.49 734 727 200.6
C 14 254 68484 337.77 734 727 200.6
D 12 110 6693571 35367.56 666 635 189.2
D 13 138 138724 729.71 666 635 189.2
D 1 27 50896 265.59 666 635 189.2

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