ASTROSAT CZTI

Data Quality Report

Orbit 58990

Creation date: 2026-08-23T07:13:40.805714
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_58990cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58990cztM0_level2_quad_clean.evt
Size (bytes)794,733,12075,401,280
Size757.9 MB 71.9 MB
Events in quadrant A3,347,906639,081
Events in quadrant B3,525,327671,067
Events in quadrant C15,918,62816,676
Events in quadrant D6,126,781507,582

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142003
B0150222
C0514092
D0228372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6431510.793034%
B64312143.327632%
C6431628797.760846%
D643188213.714819%

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 7566 6432 32 32 0.42% 0.50%
B 7566 6432 148 148 1.96% 2.30%
C 7565 6430 6181 6181 81.71% 96.13%
D 7566 6431 793 793 10.48% 12.33%

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 265052 1511.54 708 691 174.9
A 14 238 218215 1243.74 708 691 174.9
A 3 245 71378 404.17 708 691 174.9
B 4 236 565371 3793.67 696 669 148.9
B 6 255 54417 361.08 696 669 148.9
B 10 247 46479 307.75 696 669 148.9
C 15 219 15115401 298679.17 182 180 50.6
C 9 38 19526 382.28 182 180 50.6
C 11 244 12381 241.09 182 180 50.6
D 12 110 3021603 16232.02 651 620 186.1
D 5 32 136261 728.81 651 620 186.1
D 1 50 124879 667.66 651 620 186.1

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