ASTROSAT CZTI

Data Quality Report

Orbit 00138

Creation date: 2024-06-27T13:56:53.940444
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_00138cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00138cztM0_level2_quad_clean.evt
Size (bytes)981,426,24080,648,640
Size936.0 MB 76.9 MB
Events in quadrant A7,113,748517,435
Events in quadrant B7,118,038529,704
Events in quadrant C6,318,174513,368
Events in quadrant D8,800,021487,830

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250822
B0250981
C0227591
D0301041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562660.106648%
B5626110.195521%
C562630.053324%
D56261522.701742%

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 7218 5628 228 228 3.16% 4.05%
B 7218 5628 198 198 2.74% 3.52%
C 7218 5628 46 46 0.64% 0.82%
D 7218 5628 899 899 12.45% 15.97%

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 12 150 25327 78.99 1810 1764 298.3
A 14 10 18602 56.45 1810 1764 298.3
A 0 166 13132 38.11 1810 1764 298.3
B 8 236 117537 294.03 1746 1749 393.8
B 8 5 49080 120.19 1746 1749 393.8
B 14 50 39031 94.67 1746 1749 393.8
C 9 204 21229 44.14 1580 1636 443.9
C 2 37 13773 27.34 1580 1636 443.9
C 3 0 12173 23.74 1580 1636 443.9
D 0 243 1497479 3372.57 1681 1691 443.5
D 10 171 99535 220.61 1681 1691 443.5
D 2 154 89476 197.93 1681 1691 443.5

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