ASTROSAT CZTI

Data Quality Report

Orbit 00580

Creation date: 2024-06-27T14:00:05.805320
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_118T02_9000000082_00580cztM0_level2.evt modeM0/AS1P01_118T02_9000000082_00580cztM0_level2_quad_clean.evt
Size (bytes)865,903,68043,272,000
Size825.8 MB 41.3 MB
Events in quadrant A6,305,226241,622
Events in quadrant B6,564,792243,434
Events in quadrant C5,827,819242,433
Events in quadrant D7,189,332226,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223373
B0230832
C0209362
D0249632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A508440.078678%
B5084541.062156%
C508480.157356%
D50841282.517703%

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 7239 5085 121 121 1.67% 2.38%
B 7239 5085 183 183 2.53% 3.60%
C 7239 5085 85 85 1.17% 1.67%
D 7239 5085 559 559 7.72% 10.99%

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 0 238 29759 78.65 1617 1603 358.0
A 15 171 15292 38.24 1617 1603 358.0
A 0 149 9007 20.68 1617 1603 358.0
B 7 221 272098 720.75 1588 1603 375.3
B 4 206 71282 185.66 1588 1603 375.3
B 5 249 63192 164.11 1588 1603 375.3
C 1 1 100643 248.13 1433 1485 399.6
C 9 241 45018 108.94 1433 1485 399.6
C 15 241 38011 91.4 1433 1485 399.6
D 1 4 728683 1645.82 1398 1457 441.9
D 12 237 567965 1282.09 1398 1457 441.9
D 13 216 226581 509.49 1398 1457 441.9

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