ASTROSAT CZTI

Data Quality Report

Orbit 11969

Creation date: 2024-06-27T16:20:46.112966
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/AS1G08_076T03_9000001768_11969cztM0_level2.evt modeM0/AS1G08_076T03_9000001768_11969cztM0_level2_quad_clean.evt
Size (bytes)137,341,44032,967,360
Size131.0 MB 31.4 MB
Events in quadrant A1,053,266223,627
Events in quadrant B1,214,501223,607
Events in quadrant C761,450224,596
Events in quadrant D1,027,190216,225

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041251
B046871
C031431
D041701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1480724.864865%
B1480704.729730%
C148020.135135%
D1480271.824324%

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 1481 1481 55 55 3.71% 3.71%
B 1481 1481 45 45 3.04% 3.04%
C 1481 1481 0 0 0.00% 0.00%
D 1481 1481 21 21 1.42% 1.42%

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 11 29 103848 2428.95 204 200 42.7
A 6 254 65488 1530.0 204 200 42.7
A 1 162 36017 839.36 204 200 42.7
B 4 239 274309 6960.14 199 195 39.4
B 11 51 67222 1701.91 199 195 39.4
B 15 204 66612 1686.42 199 195 39.4
C 13 61 1444 27.15 195 195 46.0
C 7 247 507 6.78 195 195 46.0
C 3 202 481 6.22 195 195 46.0
D 8 195 94108 1938.99 199 194 48.4
D 13 112 37443 769.06 199 194 48.4
D 2 136 30055 616.52 199 194 48.4

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