ASTROSAT CZTI

Data Quality Report

Orbit 20200415_T03_189T01_9000003614_level2

Creation date: 2025-12-10T14:44:28.759668
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_189T01_9000003614cztM0_level2.fits modeM0/AS1T03_189T01_9000003614cztM0_level2_quad_clean.evt
Size (bytes)965,736,000797,564,160
Size921.0 MB 760.6 MB
Events in quadrant A6,053,2294,643,108
Events in quadrant B5,718,6224,586,160
Events in quadrant C5,647,2864,173,735
Events in quadrant D5,091,7764,016,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02730
B02730
C02730
D02730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01988220
B02141210
C02740050
D02386400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019140
B037000
C037000
D037000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9395311281.200600%
B9395626652.836434%
C9395283478.884324%
D9395234773.700826%

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 107962 93948 0 0 0.00% 0.00%
B 107962 93943 0 0 0.00% 0.00%
C 107961 93942 0 0 0.00% 0.00%
D 107961 93868 0 0 0.00% 0.00%

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 29 5699 11.1 1575 1484 379.8
A 7 110 4763 8.63 1575 1484 379.8
A 9 19 4386 7.64 1575 1484 379.8
B 2 9 4486 10.21 1513 1449 297.6
B 2 8 3823 7.98 1513 1449 297.6
B 5 128 3754 7.75 1513 1449 297.6
C 3 126 3855 6.52 1492 1399 376.7
C 9 209 3817 6.42 1492 1399 376.7
C 12 241 3815 6.41 1492 1399 376.7
D 3 14 3548 5.83 1452 1325 381.1
D 6 67 3540 5.81 1452 1325 381.1
D 10 189 3533 5.79 1452 1325 381.1

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