ASTROSAT CZTI

Data Quality Report

Orbit 34236

Creation date: 2022-07-18T13:20:59.456414
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_059T09_9000004888_34236cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34236cztM0_level2_quad_clean.evt
Size (bytes)494,478,72082,846,080
Size471.6 MB 79.0 MB
Events in quadrant A3,362,329550,915
Events in quadrant B3,091,559568,446
Events in quadrant C3,664,458541,485
Events in quadrant D4,516,963495,765

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133850
B0124290
C0141550
D0169690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50191252.490536%
B50192074.124328%
C50191943.865312%
D501954210.798964%

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 7082 5020 105 105 1.48% 2.09%
B 7082 5020 149 149 2.10% 2.97%
C 7082 5019 124 124 1.75% 2.47%
D 7082 5019 538 538 7.60% 10.72%

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 989851 8477.67 579 570 116.7
A 9 143 103638 883.24 579 570 116.7
A 10 83 22286 186.1 579 570 116.7
B 5 172 563568 5029.1 578 564 111.9
B 5 255 125718 1117.95 578 564 111.9
B 0 189 75898 672.93 578 564 111.9
C 7 220 581635 4572.98 550 555 127.1
C 0 10 380619 2991.02 550 555 127.1
C 14 254 216633 1700.49 550 555 127.1
D 7 80 1507193 11437.4 537 523 131.7
D 8 195 621457 4713.62 537 523 131.7
D 2 250 126488 956.22 537 523 131.7

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