ASTROSAT CZTI

Data Quality Report

Orbit 14468

Creation date: 2024-06-27T16:55:34.386791
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_025T01_9000002130_14468cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14468cztM0_level2_quad_clean.evt
Size (bytes)1,369,454,400219,625,920
Size1.3 GB 209.5 MB
Events in quadrant A9,107,1021,397,050
Events in quadrant B10,193,7381,347,732
Events in quadrant C9,925,6641,326,833
Events in quadrant D10,987,9951,295,238

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386375
B0420264
C0403914
D0451924

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186362621.405881%
B186364922.640052%
C186362431.303928%
D186368874.759605%

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 20417 18640 5 5 0.02% 0.03%
B 20417 18640 164 164 0.80% 0.88%
C 20417 18640 3 3 0.01% 0.02%
D 20417 18640 530 530 2.60% 2.84%

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 12 189 148105 319.93 2268 2222 456.0
A 8 15 103783 222.73 2268 2222 456.0
A 1 162 35513 73.01 2268 2222 456.0
B 0 182 551364 1290.92 2242 2185 425.4
B 0 219 232629 541.69 2242 2185 425.4
B 15 222 158714 367.94 2242 2185 425.4
C 3 233 1320804 2631.45 2175 2185 501.1
C 0 207 94614 184.45 2175 2185 501.1
C 13 61 15873 27.32 2175 2185 501.1
D 10 199 1376093 2679.52 2136 2081 512.8
D 12 110 430958 836.37 2136 2081 512.8
D 10 70 366251 710.18 2136 2081 512.8

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