ASTROSAT CZTI

Data Quality Report

Orbit 17623

Creation date: 2024-06-27T17:38:47.006570
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/AS1T03_071T01_9000002610_17623cztM0_level2.evt modeM0/AS1T03_071T01_9000002610_17623cztM0_level2_quad_clean.evt
Size (bytes)713,655,360141,312,960
Size680.6 MB 134.8 MB
Events in quadrant A5,063,326902,879
Events in quadrant B4,944,226903,571
Events in quadrant C5,699,427866,239
Events in quadrant D5,182,027867,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222261
B0219451
C0236051
D0231861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10682290.271485%
B10683330.308902%
C106821020.954877%
D10682910.851900%

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 11272 10683 5 5 0.04% 0.05%
B 11273 10684 3 3 0.03% 0.03%
C 11272 10683 6 6 0.05% 0.06%
D 11272 10683 32 32 0.28% 0.30%

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 14 237 275709 1084.26 1244 1218 253.2
A 0 226 10737 37.6 1244 1218 253.2
A 3 137 9229 31.64 1244 1218 253.2
B 7 220 35249 143.44 1238 1203 237.3
B 0 189 31275 126.7 1238 1203 237.3
B 12 111 28538 115.17 1238 1203 237.3
C 3 233 727080 2612.57 1184 1190 277.8
C 14 238 182056 650.96 1184 1190 277.8
C 0 207 95166 338.23 1184 1190 277.8
D 1 52 244395 827.99 1202 1166 293.8
D 13 189 140331 473.74 1202 1166 293.8
D 12 144 111689 376.24 1202 1166 293.8

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