ASTROSAT CZTI

Data Quality Report

Orbit 27749

Creation date: 2024-06-27T19:43:52.433209
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/AS1A10_002T05_9000004000_27749cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27749cztM0_level2_quad_clean.evt
Size (bytes)465,117,120100,296,000
Size443.6 MB 95.6 MB
Events in quadrant A3,249,224664,547
Events in quadrant B3,690,659661,253
Events in quadrant C3,377,175647,507
Events in quadrant D3,346,935630,199

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134910
B0148900
C0138330
D0139560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6220620.996785%
B62201412.266881%
C62191081.736614%
D6219570.916546%

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 7535 6220 3 3 0.04% 0.05%
B 7535 6220 83 83 1.10% 1.33%
C 7534 6219 0 0 0.00% 0.00%
D 7534 6220 24 24 0.32% 0.39%

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 0 13 45079 272.45 825 810 162.5
A 8 192 14804 86.13 825 810 162.5
A 13 254 11211 64.01 825 810 162.5
B 10 245 405568 2682.81 814 796 150.9
B 4 200 71723 470.1 814 796 150.9
B 0 190 20790 132.52 814 796 150.9
C 14 238 129161 690.82 800 806 185.8
C 3 233 97483 520.32 800 806 185.8
C 15 208 33483 175.87 800 806 185.8
D 1 52 241892 1287.45 803 784 187.3
D 2 250 45681 239.74 803 784 187.3
D 2 234 26425 136.92 803 784 187.3

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