ASTROSAT CZTI

Data Quality Report

Orbit 42802

Creation date: 2024-06-27T22:44:25.214700
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/AS1C06_010T01_9000005824_42802cztM0_level2.fits modeM0/AS1C06_010T01_9000005824_42802cztM0_level2_quad_clean.evt
Size (bytes)144,688,32036,443,520
Size138.0 MB 34.8 MB
Events in quadrant A1,242,678244,733
Events in quadrant B1,097,294251,963
Events in quadrant C1,151,007234,787
Events in quadrant D1,693,350214,571

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050301
B046771
C047141
D065321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2174170.781969%
B2174150.689972%
C2174110.505980%
D21741034.737810%

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 3757 2175 3 3 0.08% 0.14%
B 3757 2175 6 6 0.16% 0.28%
C 3757 2175 9 9 0.24% 0.41%
D 3757 2175 84 84 2.24% 3.86%

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 10 83 272888 5170.73 247 242 52.7
A 12 189 2901 50.43 247 242 52.7
A 3 137 2738 47.34 247 242 52.7
B 5 172 38658 769.54 247 240 49.9
B 0 245 30003 596.17 247 240 49.9
B 0 230 11209 219.72 247 240 49.9
C 3 233 102377 1792.84 238 239 57.0
C 15 214 89227 1562.02 238 239 57.0
C 14 254 29620 515.73 238 239 57.0
D 1 52 422337 7084.06 235 228 59.6
D 2 249 208137 3489.24 235 228 59.6
D 10 118 44154 737.19 235 228 59.6

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