ASTROSAT CZTI

Data Quality Report

Orbit 59154

Creation date: 2026-09-03T08:43:39.103174
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/AS1T05_264T01_9000006602_59154cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59154cztM0_level2_quad_clean.evt
Size (bytes)772,617,60084,309,120
Size736.8 MB 80.4 MB
Events in quadrant A3,234,900666,894
Events in quadrant B3,541,316723,085
Events in quadrant C4,181,169646,241
Events in quadrant D17,111,76641,201

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145362
B0153352
C0171342
D0555385

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6821801.172849%
B68221982.902375%
C68222994.382879%
D6821642794.223721%

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 9030 6887 6 6 0.07% 0.09%
B 9031 6887 49 49 0.54% 0.71%
C 9031 6888 208 208 2.30% 3.02%
D 9029 6849 6284 6284 69.60% 91.75%

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 10 251 111940 581.83 776 755 191.1
A 3 254 51292 264.46 776 755 191.1
A 3 14 25434 129.14 776 755 191.1
B 4 236 265750 1596.53 772 744 166.0
B 5 185 138976 832.78 772 744 166.0
B 5 236 32398 190.7 772 744 166.0
C 5 250 976030 4722.08 753 747 206.5
C 14 254 82487 395.77 753 747 206.5
C 5 233 70706 338.72 753 747 206.5
D 12 1 13855213 238674.74 199 190 58.0
D 12 110 1614170 27803.36 199 190 58.0
D 2 31 696432 11993.87 199 190 58.0

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