ASTROSAT CZTI

Data Quality Report

Orbit 58973

Creation date: 2026-08-22T05:09:56.009719
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_58973cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58973cztM0_level2_quad_clean.evt
Size (bytes)612,270,72096,163,200
Size583.9 MB 91.7 MB
Events in quadrant A7,630,764592,239
Events in quadrant B6,224,968636,103
Events in quadrant C3,691,806629,523
Events in quadrant D4,589,178578,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274782
B0231934
C0158672
D0183982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A680698014.399060%
B680692113.532177%
C68061412.071701%
D68063645.348222%

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 8476 6808 791 791 9.33% 11.62%
B 8476 6808 629 629 7.42% 9.24%
C 8476 6808 114 114 1.34% 1.67%
D 8476 6808 335 335 3.95% 4.92%

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 3 14 2902826 16393.48 715 698 177.0
A 14 238 1742684 9840.09 715 698 177.0
A 13 248 94698 530.99 715 698 177.0
B 6 255 1994037 13290.23 704 679 150.0
B 4 236 732205 4877.27 704 679 150.0
B 10 247 427596 2846.36 704 679 150.0
C 12 252 332161 1646.98 728 721 201.2
C 14 254 214497 1062.29 728 721 201.2
C 4 5 98647 486.61 728 721 201.2
D 2 249 411276 2015.43 716 683 203.7
D 12 110 372899 1827.05 716 683 203.7
D 6 239 359909 1763.29 716 683 203.7

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