ASTROSAT CZTI

Data Quality Report

Orbit 36236

Creation date: 2022-06-13T16:07:22.483271
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/AS1A10_071T34_9000005178_36236cztM0_level2.evt modeM0/AS1A10_071T34_9000005178_36236cztM0_level2_quad_clean.evt
Size (bytes)198,792,00027,308,160
Size189.6 MB 26.0 MB
Events in quadrant A1,070,513176,306
Events in quadrant B1,447,587171,433
Events in quadrant C1,184,026175,045
Events in quadrant D2,173,572151,151

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043972
B056211
C046621
D078891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209580.381862%
B20951004.773270%
C2095170.811456%
D209526812.792363%

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 3556 2096 2 2 0.06% 0.10%
B 3556 2095 67 67 1.88% 3.20%
C 3556 2096 12 12 0.34% 0.57%
D 3556 2096 279 279 7.85% 13.31%

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 84927 1613.58 249 243 52.5
A 10 248 9470 175.81 249 243 52.5
A 13 6 5530 100.74 249 243 52.5
B 5 172 175774 3602.6 245 238 48.7
B 5 236 156544 3207.93 245 238 48.7
B 5 255 37230 759.2 245 238 48.7
C 15 214 91452 1551.94 244 245 58.8
C 0 10 90529 1536.24 244 245 58.8
C 12 250 43728 739.89 244 245 58.8
D 12 227 966894 16381.95 232 224 59.0
D 12 235 124662 2108.82 232 224 59.0
D 13 171 65370 1104.02 232 224 59.0

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