ASTROSAT CZTI

Data Quality Report

Orbit 53791

Creation date: 2025-09-07T12:12:07.162037
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/AS1A14_022T04_9000006506_53791cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53791cztM0_level2_quad_clean.evt
Size (bytes)713,623,68088,992,000
Size680.6 MB 84.9 MB
Events in quadrant A9,472,971482,664
Events in quadrant B3,817,920674,572
Events in quadrant C6,119,445548,643
Events in quadrant D6,494,062527,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328132
B0161522
C0228442
D0238872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6614186128.137285%
B66142263.416994%
C661587313.197279%
D661472911.022074%

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 7694 6615 1799 1799 23.38% 27.20%
B 7694 6615 117 117 1.52% 1.77%
C 7695 6616 704 704 9.15% 10.64%
D 7694 6615 613 613 7.97% 9.27%

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 3 63 6328086 40547.43 631 614 156.1
A 8 249 328568 2101.58 631 614 156.1
A 4 249 199574 1274.97 631 614 156.1
B 4 171 483742 3197.81 700 673 151.1
B 5 185 196654 1297.35 700 673 151.1
B 8 234 188592 1243.98 700 673 151.1
C 15 224 2678182 14836.59 651 643 180.5
C 1 241 593583 3285.56 651 643 180.5
C 12 2 120366 663.4 651 643 180.5
D 1 241 1102805 5956.36 650 622 185.0
D 2 153 660000 3563.38 650 622 185.0
D 2 172 637455 3441.54 650 622 185.0

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