ASTROSAT CZTI

Data Quality Report

Orbit 36592

Creation date: 2024-06-27T21:28:51.966199
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_097T24_9000005224_36592cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36592cztM0_level2_quad_clean.evt
Size (bytes)430,142,40071,625,600
Size410.2 MB 68.3 MB
Events in quadrant A2,829,911462,992
Events in quadrant B2,680,298470,070
Events in quadrant C3,410,113431,200
Events in quadrant D3,736,867423,476

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115163
B0111132
C0133182
D0146682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A543890.165502%
B543870.128724%
C54381643.015815%
D54381122.059581%

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 7351 5439 0 0 0.00% 0.00%
B 7351 5439 2 2 0.03% 0.04%
C 7351 5439 137 137 1.86% 2.52%
D 7351 5439 104 104 1.41% 1.91%

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 10 83 197957 1467.02 675 663 134.5
A 15 223 16242 115.84 675 663 134.5
A 9 143 8797 60.48 675 663 134.5
B 0 213 29731 229.67 663 647 126.6
B 12 111 15515 117.41 663 647 126.6
B 11 111 14344 108.16 663 647 126.6
C 0 10 385994 2662.69 628 633 144.7
C 0 207 260145 1793.12 628 633 144.7
C 15 214 234448 1615.57 628 633 144.7
D 12 227 488229 3144.57 641 626 155.1
D 13 249 207798 1336.06 641 626 155.1
D 2 250 181123 1164.03 641 626 155.1

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