ASTROSAT CZTI

Data Quality Report

Orbit 37157

Creation date: 2024-06-27T21:36:18.950612
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_37157cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37157cztM0_level2_quad_clean.evt
Size (bytes)395,798,40064,728,000
Size377.5 MB 61.7 MB
Events in quadrant A2,829,155408,023
Events in quadrant B2,904,461409,985
Events in quadrant C2,799,479401,134
Events in quadrant D3,099,444375,681

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114553
B0116282
C0111602
D0123512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5211110.211092%
B5211851.631165%
C521190.172712%
D52111092.091729%

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 7153 5212 2 2 0.03% 0.04%
B 7153 5212 48 48 0.67% 0.92%
C 7153 5212 5 5 0.07% 0.10%
D 7153 5212 87 87 1.22% 1.67%

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 10 83 250132 1884.06 663 651 132.4
A 9 143 7926 54.94 663 651 132.4
A 13 254 7375 50.78 663 651 132.4
B 5 172 290236 2341.76 652 638 123.7
B 5 200 24419 192.3 652 638 123.7
B 12 111 15184 117.62 652 638 123.7
C 15 214 243814 1668.18 635 641 145.8
C 0 10 62525 424.53 635 641 145.8
C 14 254 8185 51.75 635 641 145.8
D 2 249 310084 2017.63 634 618 153.4
D 2 153 79929 517.08 634 618 153.4
D 12 235 50997 328.46 634 618 153.4

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