ASTROSAT CZTI

Data Quality Report

Orbit 13918

Creation date: 2024-06-27T16:47:53.829459
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/AS1A04_219T01_9000002054_13918cztM0_level2.evt modeM0/AS1A04_219T01_9000002054_13918cztM0_level2_quad_clean.evt
Size (bytes)137,102,40015,076,800
Size130.8 MB 14.4 MB
Events in quadrant A826,17287,388
Events in quadrant B814,02489,387
Events in quadrant C808,21984,741
Events in quadrant D1,594,79178,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033232
B032741
C032691
D058551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157370.445010%
B157370.445010%
C157350.317864%
D1573744.704387%

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 1574 1574 0 0 0.00% 0.00%
B 1574 1574 1 1 0.06% 0.06%
C 1574 1574 0 0 0.00% 0.00%
D 1574 1574 27 27 1.72% 1.72%

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 9 143 15862 348.56 209 203 44.9
A 1 162 2874 59.45 209 203 44.9
A 15 69 2537 51.95 209 203 44.9
B 12 111 4926 112.76 205 199 41.9
B 0 219 4904 112.23 205 199 41.9
B 11 111 4371 99.52 205 199 41.9
C 3 233 31730 653.44 199 200 48.3
C 13 61 1361 24.06 199 200 48.3
C 3 202 483 5.86 199 200 48.3
D 1 52 767107 15767.76 197 191 48.6
D 13 122 50237 1028.93 197 191 48.6
D 7 223 6558 130.9 197 191 48.6

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