ASTROSAT CZTI

Data Quality Report

Orbit 17453

Creation date: 2024-06-27T17:36:43.243868
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/AS1T03_067T01_9000002582_17453cztM0_level2.evt modeM0/AS1T03_067T01_9000002582_17453cztM0_level2_quad_clean.evt
Size (bytes)1,424,862,720243,679,680
Size1.3 GB 232.4 MB
Events in quadrant A8,208,4791,573,923
Events in quadrant B8,756,2111,602,933
Events in quadrant C9,404,6061,539,660
Events in quadrant D15,598,0631,454,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359944
B0375324
C0385854
D0585184

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17562590.335953%
B175621160.660517%
C175612331.326804%
D17562216512.327753%

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 21227 17566 7 7 0.03% 0.04%
B 21227 17566 22 22 0.10% 0.13%
C 21226 17565 25 25 0.12% 0.14%
D 21227 17565 1922 1922 9.05% 10.94%

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 14 237 68478 158.01 2104 2058 420.4
A 3 64 51392 117.36 2104 2058 420.4
A 0 226 18281 38.59 2104 2058 420.4
B 7 220 402443 1010.75 2104 2054 396.1
B 12 111 45529 109.75 2104 2054 396.1
B 11 111 38839 92.86 2104 2054 396.1
C 3 233 1002538 2119.49 2037 2052 472.0
C 14 238 317710 668.71 2037 2052 472.0
C 5 218 124071 258.49 2037 2052 472.0
D 11 176 5814257 12129.49 1975 1921 479.2
D 13 232 957223 1993.57 1975 1921 479.2
D 13 189 530669 1103.42 1975 1921 479.2

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