ASTROSAT CZTI

Data Quality Report

Orbit 20190405_A05_022T03_9000002832_level2

Creation date: 2025-11-29T02:12:00.464884
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/AS1A05_022T03_9000002832cztM0_level2.fits modeM0/AS1A05_022T03_9000002832cztM0_level2_quad_clean.evt
Size (bytes)125,415,360119,836,800
Size119.6 MB 114.3 MB
Events in quadrant A796,318744,159
Events in quadrant B763,870735,706
Events in quadrant C778,412701,491
Events in quadrant D493,000482,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287040
B0315830
C0289950
D0599730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139731851.323982%
B139733912.798254%
C139732511.796321%
D13973441631.603807%

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 15913 13973 0 0 0.00% 0.00%
B 15913 13966 0 0 0.00% 0.00%
C 15913 13973 0 0 0.00% 0.00%
D 15913 11702 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 29 784 10.66 207 194 55.3
A 9 19 634 7.95 207 194 55.3
A 0 30 617 7.64 207 194 55.3
B 2 9 641 10.41 201 191 43.2
B 2 8 540 8.08 201 191 43.2
B 14 254 514 7.47 201 191 43.2
C 1 80 568 7.02 204 190 53.8
C 1 81 565 6.97 204 190 53.8
C 7 111 543 6.56 204 190 53.8
D 6 38 380 6.55 140 128 38.5
D 10 190 375 6.42 140 128 38.5
D 6 231 353 5.85 140 128 38.5

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