ASTROSAT CZTI

Data Quality Report

Orbit 19664

Creation date: 2024-06-27T18:05:22.579332
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_005T01_9000002928_19664cztM0_level2.evt modeM0/AS1T03_005T01_9000002928_19664cztM0_level2_quad_clean.evt
Size (bytes)824,590,080165,150,720
Size786.4 MB 157.5 MB
Events in quadrant A5,897,5101,048,090
Events in quadrant B6,220,9751,057,191
Events in quadrant C6,006,0821,010,782
Events in quadrant D5,982,8801,003,379

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02600
C02600
D02600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261373
B0268534
C0261243
D0267113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127651230.963572%
B127651731.355268%
C127651711.339600%
D12765790.618880%

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 14005 12765 0 0 0.00% 0.00%
B 14005 12765 40 40 0.29% 0.31%
C 14005 12765 0 0 0.00% 0.00%
D 14005 12766 3 3 0.02% 0.02%

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 11 29 33591 105.29 1510 1477 305.0
A 9 143 18282 55.1 1510 1477 305.0
A 4 2 18255 55.01 1510 1477 305.0
B 7 220 172884 591.66 1505 1462 289.7
B 0 198 51715 173.45 1505 1462 289.7
B 12 111 35188 116.4 1505 1462 289.7
C 14 238 225942 656.97 1453 1459 341.7
C 3 233 76491 219.59 1453 1459 341.7
C 9 221 18868 50.95 1453 1459 341.7
D 2 16 143426 395.2 1478 1438 359.3
D 1 20 105153 288.67 1478 1438 359.3
D 1 52 97218 266.59 1478 1438 359.3

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