ASTROSAT CZTI

Data Quality Report

Orbit 55470

Creation date: 2025-12-29T13:26:33.160090
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_099T01_9000006536_55470cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55470cztM0_level2_quad_clean.evt
Size (bytes)475,358,400103,728,960
Size453.3 MB 98.9 MB
Events in quadrant A3,362,750688,463
Events in quadrant B4,475,054712,810
Events in quadrant C5,039,368598,334
Events in quadrant D4,137,008620,541

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542
B01542
C01542
D01542

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015649191
B019048242
C021114314
D018009271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7476700.936330%
B74823795.065491%
C747979110.576280%
D74841832.445216%

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 8958 7492 6 6 0.07% 0.08%
B 8958 7491 175 175 1.95% 2.34%
C 8958 7492 713 713 7.96% 9.52%
D 8959 7496 147 147 1.64% 1.96%

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 78 124447 625.5 795 774 197.7
A 4 3 31362 154.71 795 774 197.7
A 3 14 28936 142.44 795 774 197.7
B 5 172 665176 4035.34 774 744 164.7
B 0 171 531711 3224.76 774 744 164.7
B 10 247 103358 623.21 774 744 164.7
C 9 38 1911773 9775.68 715 709 195.5
C 13 3 159014 809.78 715 709 195.5
C 12 252 135233 688.13 715 709 195.5
D 8 160 586777 2699.6 768 735 217.1
D 11 129 193103 886.14 768 735 217.1
D 2 249 129302 592.24 768 735 217.1

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