ASTROSAT CZTI

Data Quality Report

Orbit 20200627_A09_043T01_9000003744_level2

Creation date: 2025-12-13T03:34:59.782720
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/AS1A09_043T01_9000003744cztM0_level2.fits modeM0/AS1A09_043T01_9000003744cztM0_level2_quad_clean.evt
Size (bytes)762,125,760601,439,040
Size726.8 MB 573.6 MB
Events in quadrant A4,723,5943,421,698
Events in quadrant B4,569,1683,427,469
Events in quadrant C4,581,8103,207,724
Events in quadrant D3,958,1282,907,772

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015620
B015620
C015620
D015620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01690830
B01614490
C01591430
D02118190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7652511031.441359%
B765259941.298922%
C7652512381.617772%
D7652522092.886638%

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 93357 76514 0 0 0.00% 0.00%
B 93357 76519 0 0 0.00% 0.00%
C 93357 76519 0 0 0.00% 0.00%
D 93357 76494 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 4022 9.55 1229 1155 300.3
A 7 110 3908 9.17 1229 1155 300.3
A 0 30 3476 7.73 1229 1155 300.3
B 2 9 3576 10.34 1206 1152 234.4
B 2 8 3040 8.05 1206 1152 234.4
B 3 80 3019 7.96 1206 1152 234.4
C 1 81 3559 7.92 1208 1127 307.0
C 1 80 3507 7.75 1208 1127 307.0
C 12 241 3200 6.75 1208 1127 307.0
D 3 14 2842 6.0 1128 1025 302.7
D 6 67 2773 5.77 1128 1025 302.7
D 6 231 2757 5.72 1128 1025 302.7

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