ASTROSAT CZTI

Data Quality Report

Orbit 11675

Creation date: 2024-06-27T16:16:37.429640
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_037T03_9000001722_11675cztM0_level2.evt modeM0/AS1A04_037T03_9000001722_11675cztM0_level2_quad_clean.evt
Size (bytes)723,064,320112,357,440
Size689.6 MB 107.2 MB
Events in quadrant A6,279,170681,760
Events in quadrant B5,032,905698,336
Events in quadrant C4,487,053683,211
Events in quadrant D5,427,654652,226

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253483
B0213942
C0200412
D0228852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99152012.027231%
B9915900.907716%
C9915110.110943%
D99151511.522945%

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 11696 9918 70 70 0.60% 0.71%
B 11696 9918 23 23 0.20% 0.23%
C 11696 9918 0 0 0.00% 0.00%
D 11696 9918 95 95 0.81% 0.96%

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 5 834972 3511.65 1167 1143 237.4
A 1 162 299214 1255.32 1167 1143 237.4
A 1 178 171303 716.63 1167 1143 237.4
B 4 239 187430 825.99 1179 1151 225.5
B 15 204 81732 357.31 1179 1151 225.5
B 3 64 76966 336.17 1179 1151 225.5
C 13 61 8399 27.04 1151 1158 267.8
C 3 202 2813 6.18 1151 1158 267.8
C -1 -1 -1 -1.0 1151 1158 267.8
D 1 52 428410 1571.88 1133 1101 271.8
D 13 104 365686 1341.15 1133 1101 271.8
D 8 195 219539 803.54 1133 1101 271.8

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