ASTROSAT CZTI

Data Quality Report

Orbit 33964

Creation date: 2024-06-27T20:54:43.896640
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/AS1A11_034T02_9000004856_33964cztM0_level2.evt modeM0/AS1A11_034T02_9000004856_33964cztM0_level2_quad_clean.evt
Size (bytes)542,626,56075,631,680
Size517.5 MB 72.1 MB
Events in quadrant A3,533,921478,539
Events in quadrant B3,417,178480,485
Events in quadrant C3,404,839470,425
Events in quadrant D5,666,582436,787

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145653
B0139122
C0138332
D0210872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6060831.369637%
B60601342.211221%
C6060731.204620%
D60604477.376238%

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 8836 6062 29 29 0.33% 0.48%
B 8836 6062 70 70 0.79% 1.15%
C 8836 6062 61 61 0.69% 1.01%
D 8836 6062 351 351 3.97% 5.79%

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 15 169 770174 5398.42 706 692 142.5
A 13 6 20431 138.48 706 692 142.5
A 10 83 16036 107.65 706 692 142.5
B 5 172 427087 3170.77 702 683 134.5
B 0 190 66756 491.32 702 683 134.5
B 0 229 36175 263.92 702 683 134.5
C 15 214 263286 1656.87 686 694 158.5
C 0 10 226716 1426.13 686 694 158.5
C 3 233 186524 1172.53 686 694 158.5
D 8 195 831146 4983.57 672 653 166.6
D 12 233 545989 3272.42 672 653 166.6
D 13 249 521330 3124.45 672 653 166.6

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