ASTROSAT CZTI

Data Quality Report

Orbit 54052

Creation date: 2025-09-25T01:53:33.336256
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_041T01_9000006510_54052cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54052cztM0_level2_quad_clean.evt
Size (bytes)542,545,92089,654,400
Size517.4 MB 85.5 MB
Events in quadrant A4,489,981605,478
Events in quadrant B6,987,535550,758
Events in quadrant C3,445,471579,449
Events in quadrant D4,671,103539,725

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178192
B0251485
C0149832
D0184022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63033715.886086%
B6302134521.342431%
C63022714.300222%
D63023625.744208%

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 7523 6304 296 296 3.93% 4.70%
B 7522 6304 1148 1148 15.26% 18.21%
C 7522 6304 237 237 3.15% 3.76%
D 7521 6302 285 285 3.79% 4.52%

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 12 115 1076716 6525.48 661 641 164.9
A 15 174 363272 2199.05 661 641 164.9
A 12 15 176318 1065.33 661 641 164.9
B 5 250 1458063 11831.21 587 571 123.2
B 15 20 1310731 10635.24 587 571 123.2
B 4 81 976165 7919.4 587 571 123.2
C 1 241 460862 2547.22 651 643 180.7
C 12 2 195233 1077.02 651 643 180.7
C 13 3 68940 378.01 651 643 180.7
D 2 165 960105 5225.11 648 619 183.6
D 2 172 279701 1519.81 648 619 183.6
D 8 176 191854 1041.42 648 619 183.6

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