ASTROSAT CZTI

Data Quality Report

Orbit 31971

Creation date: 2024-06-27T20:34:45.026643
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_053T10_9000004670_31971cztM0_level2.evt modeM0/AS1A10_053T10_9000004670_31971cztM0_level2_quad_clean.evt
Size (bytes)834,505,920120,576,960
Size795.8 MB 115.0 MB
Events in quadrant A4,492,782770,861
Events in quadrant B7,151,263775,598
Events in quadrant C7,174,407732,458
Events in quadrant D5,831,269731,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189452
B0281842
C0270523
D0234062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9237270.292303%
B92371491.613078%
C92368489.181464%
D92362312.501083%

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 11227 9237 1 1 0.01% 0.01%
B 11227 9237 10 10 0.09% 0.11%
C 11225 9235 553 553 4.93% 5.99%
D 11226 9236 196 196 1.75% 2.12%

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 13 254 16987 68.42 1162 1140 231.6
A 3 137 12073 47.2 1162 1140 231.6
A 0 226 9754 37.19 1162 1140 231.6
B 6 159 2407205 10873.43 1151 1119 221.3
B 10 245 140387 629.37 1151 1119 221.3
B 0 190 48471 213.99 1151 1119 221.3
C 0 10 2433813 9468.54 1102 1110 256.9
C 3 233 218042 844.34 1102 1110 256.9
C 14 238 181281 701.26 1102 1110 256.9
D 8 195 718152 2707.87 1122 1093 264.8
D 7 238 539934 2034.86 1122 1093 264.8
D 11 164 234677 882.1 1122 1093 264.8

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