ASTROSAT CZTI

Data Quality Report

Orbit 01059

Creation date: 2024-06-27T14:06:50.349327
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/AS1P01_998T02_9000000190_01059cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01059cztM0_level2_quad_clean.evt
Size (bytes)1,102,746,240114,517,440
Size1.0 GB 109.2 MB
Events in quadrant A8,030,368767,476
Events in quadrant B8,346,330773,991
Events in quadrant C8,187,236746,361
Events in quadrant D8,381,362706,046

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286662
B0296372
C0291423
D0298202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6808340.499412%
B6808350.514101%
C6807230.337887%
D68074716.919348%

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 7523 6810 252 252 3.35% 3.70%
B 7523 6810 270 270 3.59% 3.96%
C 7522 6809 224 224 2.98% 3.29%
D 7521 6808 589 589 7.83% 8.65%

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 15 233 77297 153.28 2055 2071 490.8
A 15 127 47203 91.96 2055 2071 490.8
A 13 9 11503 19.22 2055 2071 490.8
B 5 249 72814 141.07 2132 2136 501.0
B 15 22 60875 117.24 2132 2136 501.0
B 4 185 42484 80.53 2132 2136 501.0
C 15 241 366883 659.35 1974 2039 553.3
C 3 79 50269 87.16 1974 2039 553.3
C 3 111 39219 67.19 1974 2039 553.3
D 2 152 46006 77.35 1904 1942 569.7
D 9 64 39824 66.5 1904 1942 569.7
D 13 73 27710 45.23 1904 1942 569.7

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