ASTROSAT CZTI

Data Quality Report

Orbit 15994

Creation date: 2024-06-27T17:16:16.620284
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/AS1T02_090T01_9000002360_15994cztM0_level2.evt modeM0/AS1T02_090T01_9000002360_15994cztM0_level2_quad_clean.evt
Size (bytes)514,650,24076,351,680
Size490.8 MB 72.8 MB
Events in quadrant A3,431,723478,257
Events in quadrant B4,061,103480,349
Events in quadrant C4,186,424463,120
Events in quadrant D3,487,867458,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140863
B0162632
C0166662
D0145352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61831061.714378%
B61832043.299369%
C61832664.302119%
D61831011.633511%

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 7529 6184 4 4 0.05% 0.06%
B 7529 6184 72 72 0.96% 1.16%
C 7529 6184 81 81 1.08% 1.31%
D 7529 6184 11 11 0.15% 0.18%

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 9 143 17251 92.48 881 866 177.2
A 15 239 14439 76.61 881 866 177.2
A 12 96 9505 48.76 881 866 177.2
B 7 220 218686 1335.76 873 857 163.1
B 10 245 157774 962.24 873 857 163.1
B 4 216 98065 596.1 873 857 163.1
C 9 236 568130 2930.65 844 856 193.6
C 0 207 137238 704.58 844 856 193.6
C 14 238 131241 673.6 844 856 193.6
D 2 152 93352 438.49 866 844 211.0
D 12 218 59579 278.4 866 844 211.0
D 2 234 27652 127.07 866 844 211.0

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