ASTROSAT CZTI

Data Quality Report

Orbit 29725

Creation date: 2024-06-27T20:05:17.982196
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_073T07_9000004254_29725cztM0_level2.evt modeM0/AS1A10_073T07_9000004254_29725cztM0_level2_quad_clean.evt
Size (bytes)1,589,760650,880
Size1.5 MB 635.6 KB
Events in quadrant A12,6053,400
Events in quadrant B11,2801,799
Events in quadrant C11,9603,049
Events in quadrant D7,0861,013

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03634
B02828
C03030
D03535

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022
B088
C022
D011

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031683109
B048614814
C039633911
D056275599

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2900.000000%
B1600.000000%
C2600.000000%
D900.000000%

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 1618 45 0 0 0.00% 0.00%
B 1106 26 0 0 0.00% 0.00%
C 51 35 0 0 0.00% 0.00%
D 41 13 0 0 0.00% 0.00%

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 41 22.08 3 3 1.7
A 0 226 33 17.43 3 3 1.7
A 3 137 25 12.78 3 3 1.7
B 6 159 4152 3675.21 1 1 1.1
B 12 111 60 52.24 1 1 1.1
B 14 111 42 36.3 1 1 1.1
C 14 238 473 286.9 2 2 1.6
C 3 233 330 199.79 2 2 1.6
C 2 114 47 27.41 2 2 1.6
D 7 80 1871 2973.65 1 1 0.6
D 8 195 1047 1663.34 1 1 0.6
D 13 104 71 111.31 1 1 0.6

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