ASTROSAT CZTI

Data Quality Report

Orbit 37163

Creation date: 2024-06-27T21:36:24.047351
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_079T01_9000005284_37163cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37163cztM0_level2_quad_clean.evt
Size (bytes)449,723,52068,892,480
Size428.9 MB 65.7 MB
Events in quadrant A2,809,254429,794
Events in quadrant B3,088,205432,082
Events in quadrant C3,004,630428,949
Events in quadrant D4,329,655395,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120563
B0129622
C0124572
D0168422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5714110.192510%
B5714791.382569%
C5714530.927546%
D57143696.457823%

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 7117 5715 8 8 0.11% 0.14%
B 7117 5715 50 50 0.70% 0.87%
C 7117 5715 57 57 0.80% 1.00%
D 7117 5715 433 433 6.08% 7.58%

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 271032 2054.79 646 634 131.6
A 7 3 15832 115.49 646 634 131.6
A 9 143 8007 56.03 646 634 131.6
B 5 172 238059 1902.48 638 619 124.8
B 0 213 68468 543.64 638 619 124.8
B 4 232 66034 524.13 638 619 124.8
C 15 214 241922 1632.18 629 634 147.8
C 0 10 205970 1388.99 629 634 147.8
C 14 254 53360 356.66 629 634 147.8
D 2 153 915586 6086.84 619 602 150.3
D 13 249 495177 3290.11 619 602 150.3
D 2 249 377375 2506.45 619 602 150.3

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