ASTROSAT CZTI

Data Quality Report

Orbit 54123

Creation date: 2025-09-30T11:32:25.886711
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_012T01_9000006512_54123cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54123cztM0_level2_quad_clean.evt
Size (bytes)401,976,00092,007,360
Size383.4 MB 87.7 MB
Events in quadrant A3,214,623604,586
Events in quadrant B4,277,304642,236
Events in quadrant C2,958,322577,192
Events in quadrant D3,947,712529,730

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140841
B0169201
C0135291
D0159501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61931211.953819%
B61931913.084127%
C6193821.324076%
D61941913.083629%

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 7288 6193 69 69 0.95% 1.11%
B 7288 6194 116 116 1.59% 1.87%
C 7288 6194 61 61 0.84% 0.98%
D 7289 6195 143 143 1.96% 2.31%

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 264126 1597.97 658 640 164.9
A 7 14 221901 1341.89 658 640 164.9
A 8 6 42975 256.75 658 640 164.9
B 15 20 425941 3147.65 644 622 135.1
B 0 213 252572 1864.6 644 622 135.1
B 14 167 222606 1642.83 644 622 135.1
C 9 38 98590 559.09 637 630 175.2
C 13 3 97145 550.84 637 630 175.2
C 14 254 77431 438.33 637 630 175.2
D 7 70 277957 1543.96 633 606 179.6
D 2 249 212247 1178.16 633 606 179.6
D 2 120 204348 1134.19 633 606 179.6

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