ASTROSAT CZTI

Data Quality Report

Orbit 37731

Creation date: 2024-06-27T21:43:43.900237
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_106T02_9000005344_37731cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37731cztM0_level2_quad_clean.evt
Size (bytes)1,433,825,280112,561,920
Size1.3 GB 107.3 MB
Events in quadrant A15,257,805661,624
Events in quadrant B5,136,987746,246
Events in quadrant C4,742,832757,496
Events in quadrant D17,629,614564,092

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520032
B0221672
C0204012
D0589862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9765450546.134153%
B97651801.843318%
C9765390.399386%
D9765496050.793651%

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 11106 9764 4401 4401 39.63% 45.07%
B 11106 9764 133 133 1.20% 1.36%
C 11106 9764 27 27 0.24% 0.28%
D 11106 9764 5070 5070 45.65% 51.93%

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 15 222 10956890 56105.59 976 957 195.3
A 10 83 448975 2294.31 976 957 195.3
A 9 143 37078 184.98 976 957 195.3
B 5 172 298468 1456.91 1063 1034 204.2
B 5 200 190315 927.15 1063 1034 204.2
B 5 255 176840 861.14 1063 1034 204.2
C 15 214 408999 1669.37 1054 1060 244.4
C 0 10 85960 347.43 1054 1060 244.4
C 0 207 47334 189.36 1054 1060 244.4
D 12 227 11011032 59451.61 754 732 185.2
D 2 249 1637782 8839.47 754 732 185.2
D 12 233 742374 4004.6 754 732 185.2

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