ASTROSAT CZTI

Data Quality Report

Orbit 31961

Creation date: 2024-06-27T20:34:41.484295
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_094T33_9000004664_31961cztM0_level2.evt modeM0/AS1A10_094T33_9000004664_31961cztM0_level2_quad_clean.evt
Size (bytes)171,720,00044,150,400
Size163.8 MB 42.1 MB
Events in quadrant A1,033,700311,842
Events in quadrant B1,497,799307,543
Events in quadrant C1,296,000291,462
Events in quadrant D1,248,272293,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041621
B055811
C050632
D051123

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1807311.715551%
B1807502.767017%
C18061458.028793%
D1805382.105263%

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 3112 1807 0 0 0.00% 0.00%
B 3112 1807 0 0 0.00% 0.00%
C 3111 1806 45 45 1.45% 2.49%
D 3111 1806 3 3 0.10% 0.17%

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 14 238 4851 85.41 266 262 53.7
A 13 254 3358 57.62 266 262 53.7
A 13 6 3195 54.59 266 262 53.7
B 6 159 478058 9869.14 255 250 48.4
B 0 190 9517 191.41 255 250 48.4
B 0 156 6832 135.95 255 250 48.4
C 0 10 233502 4025.88 247 249 57.9
C 3 233 45374 778.84 247 249 57.9
C 14 238 40403 693.05 247 249 57.9
D 8 195 182821 2932.71 261 255 62.3
D 2 250 23612 375.2 261 255 62.3
D 12 233 13983 220.52 261 255 62.3

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