ASTROSAT CZTI

Data Quality Report

Orbit 17281

Creation date: 2024-06-27T17:34:27.395615
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/AS1T03_059T01_9000002554_17281cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17281cztM0_level2_quad_clean.evt
Size (bytes)802,716,480108,417,600
Size765.5 MB 103.4 MB
Events in quadrant A7,649,021714,482
Events in quadrant B3,325,513811,667
Events in quadrant C3,296,585747,552
Events in quadrant D9,597,014551,517

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272901
B0140701
C0140011
D0329258

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6557143921.946012%
B6557881.342077%
C65581081.646844%
D6557212032.331859%

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 7812 6557 1124 1124 14.39% 17.14%
B 7812 6557 0 0 0.00% 0.00%
C 7813 6559 0 0 0.00% 0.00%
D 7811 6557 2100 2100 26.89% 32.03%

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 14 235 4652984 29690.42 780 765 156.7
A 0 226 6896 39.12 780 765 156.7
A 12 194 5625 31.01 780 765 156.7
B 12 111 18605 111.19 849 831 159.9
B 11 111 16549 98.33 849 831 159.9
B 14 111 13978 82.24 849 831 159.9
C 14 238 125544 673.12 796 800 185.3
C 3 233 67251 358.57 796 800 185.3
C 13 61 5731 26.61 796 800 185.3
D 11 176 6982350 43211.43 668 649 161.6
D 2 234 22003 132.17 668 649 161.6
D 10 66 21595 129.64 668 649 161.6

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