ASTROSAT CZTI

Data Quality Report

Orbit 36769

Creation date: 2024-06-27T21:31:25.222493
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_087T05_9000005240_36769cztM0_level2.evt modeM0/AS1A11_087T05_9000005240_36769cztM0_level2_quad_clean.evt
Size (bytes)1,235,482,560114,615,360
Size1.2 GB 109.3 MB
Events in quadrant A4,786,502789,302
Events in quadrant B21,010,127454,712
Events in quadrant C5,430,451807,027
Events in quadrant D5,547,544757,618

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199724
B0688713
C0216223
D0225793

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9526190.199454%
B9526724976.096998%
C9526971.018266%
D95261972.068024%

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 13801 9528 7 7 0.05% 0.07%
B 13801 9526 6960 6960 50.43% 73.06%
C 13801 9528 92 92 0.67% 0.97%
D 13801 9528 169 169 1.22% 1.77%

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 342477 1511.64 1133 1113 225.8
A 9 143 40024 172.31 1133 1113 225.8
A 13 6 17293 71.65 1133 1113 225.8
B 12 1 18388074 157954.12 614 600 116.4
B 0 213 73321 624.7 614 600 116.4
B 5 172 39779 336.56 614 600 116.4
C 14 254 562484 2185.52 1113 1124 256.9
C 15 214 403851 1567.92 1113 1124 256.9
C 0 10 74968 287.49 1113 1124 256.9
D 13 249 403561 1507.42 1108 1081 267.0
D 10 118 167134 621.92 1108 1081 267.0
D 12 6 158130 588.2 1108 1081 267.0

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