ASTROSAT CZTI

Data Quality Report

Orbit 32901

Creation date: 2024-06-27T20:43:14.728637
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/AS1A11_007T06_9000004746_32901cztM0_level2.evt modeM0/AS1A11_007T06_9000004746_32901cztM0_level2_quad_clean.evt
Size (bytes)483,269,76071,608,320
Size460.9 MB 68.3 MB
Events in quadrant A2,439,127464,944
Events in quadrant B3,018,780478,595
Events in quadrant C2,874,405472,147
Events in quadrant D5,966,191403,175

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101983
B0120042
C0115572
D0211982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497820.040177%
B4978911.828043%
C4978851.707513%
D497866613.378867%

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 7012 4979 1 1 0.01% 0.02%
B 7012 4979 57 57 0.81% 1.14%
C 7012 4979 58 58 0.83% 1.16%
D 7012 4979 696 696 9.93% 13.98%

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 15 169 19152 150.08 619 608 123.6
A 14 63 15220 118.26 619 608 123.6
A 13 254 10236 77.92 619 608 123.6
B 5 172 290157 2524.63 623 609 114.7
B 15 201 65422 565.12 623 609 114.7
B 0 197 64456 556.7 623 609 114.7
C 0 10 278686 1993.62 611 618 139.5
C 14 67 125185 893.09 611 618 139.5
C 1 241 31793 223.51 611 618 139.5
D 8 195 1459930 10166.04 576 564 143.6
D 12 227 1149946 8006.67 576 564 143.6
D 2 250 498461 3468.38 576 564 143.6

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