ASTROSAT CZTI

Data Quality Report

Orbit 17971

Creation date: 2024-06-27T17:43:18.385420
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/AS1A05_019T01_9000002672_17971cztM0_level2.evt modeM0/AS1A05_019T01_9000002672_17971cztM0_level2_quad_clean.evt
Size (bytes)1,366,038,720217,327,680
Size1.3 GB 207.3 MB
Events in quadrant A10,773,0161,347,830
Events in quadrant B8,824,6211,374,179
Events in quadrant C9,059,1861,319,518
Events in quadrant D11,478,3191,280,245

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0439653
B0379113
C0378293
D0469693

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182817434.064329%
B182822291.252598%
C182822381.301827%
D182828804.813478%

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 20176 18283 420 420 2.08% 2.30%
B 20177 18284 8 8 0.04% 0.04%
C 20177 18284 0 0 0.00% 0.00%
D 20177 18285 588 588 2.91% 3.22%

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 15 174 2111053 4820.63 2163 2111 437.5
A 14 237 354455 805.39 2163 2111 437.5
A 0 226 18883 38.34 2163 2111 437.5
B 0 85 91253 214.97 2181 2119 414.6
B 0 197 85023 199.94 2181 2119 414.6
B 12 111 51188 118.34 2181 2119 414.6
C 3 233 501084 1017.2 2097 2108 490.5
C 14 238 321372 650.85 2097 2108 490.5
C 9 160 19384 35.22 2097 2108 490.5
D 5 222 1334481 2603.55 2101 2036 511.8
D 7 238 1141662 2226.79 2101 2036 511.8
D 7 38 461622 898.01 2101 2036 511.8

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