ASTROSAT CZTI

Data Quality Report

Orbit 53974

Creation date: 2025-09-19T21:11:22.194852
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_53974cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53974cztM0_level2_quad_clean.evt
Size (bytes)788,584,32072,771,840
Size752.1 MB 69.4 MB
Events in quadrant A3,287,156595,711
Events in quadrant B4,475,702615,543
Events in quadrant C8,943,685318,842
Events in quadrant D11,998,648236,385

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144671
B0177101
C0311049
D0399551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62581292.061361%
B62584096.535634%
C6258274343.831895%
D6259377560.313149%

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 7138 6259 53 53 0.74% 0.85%
B 7138 6259 335 335 4.69% 5.35%
C 7139 6258 2630 2630 36.84% 42.03%
D 7138 6259 3107 3107 43.53% 49.64%

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 15 174 391096 2394.4 659 643 163.1
A 7 14 140541 857.91 659 643 163.1
A 0 8 84078 511.65 659 643 163.1
B 0 155 1125039 8152.51 642 621 137.9
B 5 250 405887 2938.35 642 621 137.9
B 0 213 126129 909.99 642 621 137.9
C 1 241 6918915 52931.73 473 467 130.7
C 12 2 27646 207.94 473 467 130.7
C 12 249 17138 127.55 473 467 130.7
D 8 176 8712695 73148.72 411 393 119.1
D 6 239 527936 4429.26 411 393 119.1
D 3 12 266741 2236.26 411 393 119.1

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