ASTROSAT CZTI

Data Quality Report

Orbit 56234

Creation date: 2026-02-19T10:59:41.258301
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_083T04_9000006550_56234cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56234cztM0_level2_quad_clean.evt
Size (bytes)943,070,40070,574,400
Size899.4 MB 67.3 MB
Events in quadrant A16,627,98648,559
Events in quadrant B5,139,668617,820
Events in quadrant C4,017,464585,371
Events in quadrant D8,613,793425,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537185
B0198162
C0168252
D0301552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6592624894.781553%
B659368210.344305%
C65932714.110420%
D6593191028.970120%

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 6882 6594 5875 5875 85.37% 89.10%
B 6883 6595 399 399 5.80% 6.05%
C 6883 6595 155 155 2.25% 2.35%
D 6883 6595 1678 1678 24.38% 25.44%

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 7822510 87900.67 352 344 89.0
A 8 176 3552373 39915.51 352 344 89.0
A 15 32 2631572 29568.12 352 344 89.0
B 5 185 895510 6235.65 676 651 143.5
B 4 171 503237 3502.17 676 651 143.5
B 4 156 293914 2043.54 676 651 143.5
C 12 254 444812 2398.51 672 663 185.2
C 5 250 409887 2209.91 672 663 185.2
C 12 252 241329 1299.65 672 663 185.2
D 8 129 4352560 26367.27 577 550 165.1
D 6 239 926984 5612.93 577 550 165.1
D 2 249 369573 2235.78 577 550 165.1

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