ASTROSAT CZTI

Data Quality Report

Orbit 20190906_A05_037T01_9000003144_level2

Creation date: 2025-12-03T12:02:40.586954
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_037T01_9000003144cztM0_level2.fits modeM0/AS1A05_037T01_9000003144cztM0_level2_quad_clean.evt
Size (bytes)983,116,800905,333,760
Size937.6 MB 863.4 MB
Events in quadrant A6,027,6305,338,949
Events in quadrant B5,821,5565,405,428
Events in quadrant C5,914,7985,200,254
Events in quadrant D5,099,7544,563,655

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02292770
B02169110
C02091060
D02724720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020520
B020520
C020520
D020520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01410
B01410
C01410
D01410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10080819781.962146%
B10080812391.229069%
C10080811181.109039%
D10080836543.624712%

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 114908 100786 0 0 0.00% 0.00%
B 114908 100786 0 0 0.00% 0.00%
C 114908 100798 0 0 0.00% 0.00%
D 114908 100785 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 5738 11.35 1570 1475 375.7
A 7 110 4892 9.1 1570 1475 375.7
A 0 30 4498 8.05 1570 1475 375.7
B 2 9 4685 10.55 1541 1469 304.8
B 2 8 3946 8.13 1541 1469 304.8
B 5 128 3830 7.74 1541 1469 304.8
C 1 80 4476 7.56 1559 1455 399.6
C 1 81 4448 7.49 1559 1455 399.6
C 12 241 4173 6.8 1559 1455 399.6
D 3 14 3680 6.06 1459 1329 387.8
D 7 3 3620 5.91 1459 1329 387.8
D 6 231 3573 5.79 1459 1329 387.8

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