ASTROSAT CZTI

Data Quality Report

Orbit 26743

Creation date: 2024-06-27T19:32:21.062880
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_223T01_9000003850_26743cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26743cztM0_level2_quad_clean.evt
Size (bytes)1,156,368,960171,910,080
Size1.1 GB 163.9 MB
Events in quadrant A5,929,7881,123,029
Events in quadrant B8,844,5941,102,824
Events in quadrant C6,797,9131,103,645
Events in quadrant D12,593,7551,001,243

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260040
B0348150
C0284920
D0461250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12662520.410678%
B1266212149.587743%
C126623742.953720%
D12662204516.150687%

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 14097 12664 0 0 0.00% 0.00%
B 14096 12663 776 776 5.51% 6.13%
C 14097 12664 140 140 0.99% 1.11%
D 14097 12664 1405 1405 9.97% 11.09%

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 0 13 82545 265.79 1513 1478 305.0
A 13 254 20566 62.58 1513 1478 305.0
A 3 137 14462 42.57 1513 1478 305.0
B 0 189 3021748 10877.28 1456 1420 277.7
B 10 246 72458 255.83 1456 1420 277.7
B 12 111 34589 119.45 1456 1420 277.7
C 2 16 747587 2185.15 1451 1458 341.5
C 14 238 228681 665.46 1451 1458 341.5
C 15 208 147486 427.66 1451 1458 341.5
D 7 80 4491350 12522.99 1357 1323 358.5
D 1 52 2258304 6294.87 1357 1323 358.5
D 2 250 419164 1165.39 1357 1323 358.5

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