ASTROSAT CZTI

Data Quality Report

Orbit 00137

Creation date: 2024-06-27T13:56:53.114838
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/AS1P01_140T01_9000000004_00137cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00137cztM0_level2_quad_clean.evt
Size (bytes)915,701,76071,568,000
Size873.3 MB 68.3 MB
Events in quadrant A6,648,212456,874
Events in quadrant B6,713,329463,868
Events in quadrant C6,003,727453,778
Events in quadrant D8,017,779423,281

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235133
B0237091
C0215971
D0276201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A528530.056764%
B5256140.266362%
C528580.151372%
D52572174.127830%

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 6910 5288 183 183 2.65% 3.46%
B 6910 5259 171 171 2.47% 3.25%
C 6910 5288 66 66 0.96% 1.25%
D 6910 5260 732 732 10.59% 13.92%

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 14 171 17536 55.86 1698 1655 284.3
A 0 166 12078 36.66 1698 1655 284.3
A 14 187 9275 26.8 1698 1655 284.3
B 8 236 129157 349.25 1630 1632 365.1
B 0 151 58972 157.03 1630 1632 365.1
B 2 2 51181 135.7 1630 1632 365.1
C 0 203 46708 107.34 1484 1533 420.9
C 5 251 26695 59.79 1484 1533 420.9
C 5 203 25419 56.76 1484 1533 420.9
D 12 141 233285 558.53 1561 1570 414.9
D 10 171 221815 530.89 1561 1570 414.9
D 13 223 217454 520.37 1561 1570 414.9

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