ASTROSAT CZTI

Data Quality Report

Orbit 38414

Creation date: 2024-06-27T21:52:26.475548
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/AS1A12_018T01_9000005386_38414cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38414cztM0_level2_quad_clean.evt
Size (bytes)402,857,28091,022,400
Size384.2 MB 86.8 MB
Events in quadrant A3,118,233632,589
Events in quadrant B2,799,530646,058
Events in quadrant C2,589,017610,837
Events in quadrant D5,980,138483,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125813
B0119162
C0110702
D0216422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5470621.133455%
B5470611.115174%
C547040.073126%
D547089916.435101%

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 7173 5471 32 32 0.45% 0.58%
B 7173 5471 32 32 0.45% 0.58%
C 7173 5471 1 1 0.01% 0.02%
D 7173 5471 806 806 11.24% 14.73%

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 83 407476 3224.09 618 605 126.2
A 13 248 196978 1556.08 618 605 126.2
A 9 143 94201 741.67 618 605 126.2
B 4 232 198977 1704.45 610 593 116.4
B 4 171 104113 889.41 610 593 116.4
B 0 183 28774 242.12 610 593 116.4
C 15 214 236253 1712.16 594 598 137.6
C 0 10 11671 80.45 594 598 137.6
C 14 254 8406 56.73 594 598 137.6
D 12 235 3001980 21372.68 568 550 140.4
D 2 153 291505 2071.84 568 550 140.4
D 13 249 219306 1557.72 568 550 140.4

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