ASTROSAT CZTI

Data Quality Report

Orbit 07445

Creation date: 2024-06-27T15:19:52.150007
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/AS1A02_108T01_9000001024_07445cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07445cztM0_level2_quad_clean.evt
Size (bytes)581,958,720118,080,000
Size555.0 MB 112.6 MB
Events in quadrant A3,970,977749,828
Events in quadrant B4,088,668766,857
Events in quadrant C4,867,684743,685
Events in quadrant D4,111,808716,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178383
B0180332
C0200912
D0183162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86271131.309841%
B86271521.761910%
C86271671.935783%
D86271131.309841%

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 9132 8629 1 1 0.01% 0.01%
B 9132 8629 1 1 0.01% 0.01%
C 9132 8629 0 0 0.00% 0.00%
D 9132 8629 5 5 0.05% 0.06%

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 15 234 25954 118.28 1023 999 211.0
A 0 226 9602 40.78 1023 999 211.0
A 12 194 9088 38.34 1023 999 211.0
B 0 214 49080 241.95 1031 1004 198.7
B 12 111 21203 101.65 1031 1004 198.7
B 4 81 17949 85.28 1031 1004 198.7
C 9 68 958874 4097.97 1001 1005 233.7
C 13 61 7736 28.8 1001 1005 233.7
C 12 4 3245 9.58 1001 1005 233.7
D 13 105 98978 400.92 996 966 244.5
D 2 14 71473 288.41 996 966 244.5
D 1 52 53549 215.09 996 966 244.5

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