ASTROSAT CZTI

Data Quality Report

Orbit 27960

Creation date: 2024-06-27T19:46:27.846066
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_021T03_9000004038_27960cztM0_level2.evt modeM0/AS1A10_021T03_9000004038_27960cztM0_level2_quad_clean.evt
Size (bytes)120,049,92032,417,280
Size114.5 MB 30.9 MB
Events in quadrant A744,110221,462
Events in quadrant B757,398223,846
Events in quadrant C753,145215,659
Events in quadrant D1,272,931205,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031770
B031920
C031990
D048020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155550.321543%
B155510.064309%
C155550.321543%
D1554795.083655%

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 1555 1555 2 2 0.13% 0.13%
B 1555 1555 0 0 0.00% 0.00%
C 1555 1555 0 0 0.00% 0.00%
D 1554 1554 73 73 4.70% 4.70%

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 8 192 6411 155.07 191 188 40.1
A 13 254 2594 59.96 191 188 40.1
A 3 137 1796 40.07 191 188 40.1
B 12 111 4541 113.77 192 188 38.3
B 11 111 3835 95.31 192 188 38.3
B 14 111 3796 94.3 192 188 38.3
C 14 238 29091 646.15 184 185 44.7
C 3 233 2096 42.72 184 185 44.7
C 2 16 1517 29.77 184 185 44.7
D 1 52 340090 7808.25 179 174 43.5
D 7 80 223334 5126.23 179 174 43.5
D 8 195 27102 618.57 179 174 43.5

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