ASTROSAT CZTI

Data Quality Report

Orbit 31901

Creation date: 2024-06-27T20:34:00.052364
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_123T09_9000004654_31901cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31901cztM0_level2_quad_clean.evt
Size (bytes)177,589,44027,106,560
Size169.4 MB 25.9 MB
Events in quadrant A871,115193,728
Events in quadrant B1,267,618190,721
Events in quadrant C2,026,247155,233
Events in quadrant D1,117,333177,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035461
B046501
C069931
D043491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1388392.809798%
B13881027.348703%
C138858141.858790%
D1388423.025937%

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 1388 1388 0 0 0.00% 0.00%
B 1388 1388 29 29 2.09% 2.09%
C 1388 1388 333 333 23.99% 23.99%
D 1388 1388 3 3 0.22% 0.22%

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 15 174 3969 82.08 224 220 45.7
A 13 6 2863 57.87 224 220 45.7
A 13 254 2106 41.29 224 220 45.7
B 6 159 342719 8161.86 212 208 42.0
B 10 245 87736 2085.75 212 208 42.0
B 12 111 4740 108.0 212 208 42.0
C 3 233 964840 24163.15 169 169 39.9
C 0 10 360950 9036.87 169 169 39.9
C 14 238 29881 744.23 169 169 39.9
D 8 195 310116 6036.36 208 202 51.3
D 2 250 12544 240.38 208 202 51.3
D 12 233 5137 96.11 208 202 51.3

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