ASTROSAT CZTI

Data Quality Report

Orbit 08466

Creation date: 2024-06-27T15:33:04.033825
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/AS1A03_074T01_9000001192_08466cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08466cztM0_level2_quad_clean.evt
Size (bytes)443,194,56097,499,520
Size422.7 MB 93.0 MB
Events in quadrant A3,212,411617,179
Events in quadrant B3,419,398628,020
Events in quadrant C3,161,667630,451
Events in quadrant D3,169,769606,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139383
B0145902
C0138982
D0140402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6754250.370151%
B6754620.917975%
C6754230.340539%
D6754170.251703%

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 9264 6756 0 0 0.00% 0.00%
B 9264 6756 6 6 0.06% 0.09%
C 9264 6756 0 0 0.00% 0.00%
D 9264 6756 1 1 0.01% 0.01%

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 4 2 13435 75.41 831 815 167.3
A 0 226 7688 41.07 831 815 167.3
A 12 194 7282 38.64 831 815 167.3
B 0 231 60820 381.56 836 817 157.3
B 4 81 39892 248.48 836 817 157.3
B 11 51 38756 241.25 836 817 157.3
C 13 61 6095 28.17 809 815 187.4
C 8 222 4319 18.7 809 815 187.4
C 9 54 2724 10.19 809 815 187.4
D 2 152 49332 253.63 804 786 191.4
D 2 14 43183 221.5 804 786 191.4
D 2 234 20034 100.56 804 786 191.4

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