ASTROSAT CZTI

Data Quality Report

Orbit 58648

Creation date: 2026-07-31T10:07:53.667491
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_004T06_9000006594_58648cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58648cztM0_level2_quad_clean.evt
Size (bytes)3,062,692,800554,351,040
Size2.9 GB 528.7 MB
Events in quadrant A22,343,6263,733,582
Events in quadrant B21,979,0573,966,784
Events in quadrant C21,033,1433,639,922
Events in quadrant D45,035,4512,793,812

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0936686
B0928266
C0899706
D01607536

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07860
B07860
C07860
D07860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3858110462.711179%
B3858113213.423965%
C385818962.322387%
D38581883222.892097%

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 44116 38585 672 672 1.52% 1.74%
B 44116 38586 750 750 1.70% 1.94%
C 44116 38587 501 501 1.14% 1.30%
D 44116 38584 7591 7591 17.21% 19.67%

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 12 114 2912370 2826.32 4215 4117 1029.0
A 10 17 1895520 1838.12 4215 4117 1029.0
A 3 14 263900 252.46 4215 4117 1029.0
B 2 249 2142591 2446.46 4150 3990 874.2
B 5 185 1298037 1480.33 4150 3990 874.2
B 8 234 471146 534.4 4150 3990 874.2
C 12 252 1668705 1462.21 4145 4103 1138.4
C 15 217 1303198 1141.14 4145 4103 1138.4
C 12 249 530934 462.78 4145 4103 1138.4
D 2 249 12548513 11913.9 3717 3548 1053.0
D 11 129 11424788 10846.7 3717 3548 1053.0
D 8 240 2899239 2750.03 3717 3548 1053.0

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