ASTROSAT CZTI

Data Quality Report

Orbit 20201204_A10_045T03_9000004052_level2

Creation date: 2025-12-18T13:14:18.765907
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/AS1A10_045T03_9000004052cztM0_level2.fits modeM0/AS1A10_045T03_9000004052cztM0_level2_quad_clean.evt
Size (bytes)356,034,240353,649,600
Size339.5 MB 337.3 MB
Events in quadrant A2,222,1362,179,073
Events in quadrant B2,117,7762,165,107
Events in quadrant C2,137,0822,044,490
Events in quadrant D1,759,0061,777,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07580
B07600
C07620
D07580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0768490
B0773930
C0812030
D01291940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0580
C0580
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A370982730.735889%
B369744181.130524%
C370976831.841119%
D36973435311.773456%

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 41668 36635 0 0 0.00% 0.00%
B 41668 36617 0 0 0.00% 0.00%
C 41668 36642 0 0 0.00% 0.00%
D 41668 36605 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 1760 8.42 579 545 144.3
A 7 110 1725 8.18 579 545 144.3
A 9 19 1700 8.01 579 545 144.3
B 2 9 1738 10.98 559 536 109.4
B 2 8 1413 8.01 559 536 109.4
B 14 254 1413 8.01 559 536 109.4
C 3 187 1488 6.73 564 529 142.5
C 9 242 1448 6.45 564 529 142.5
C 9 209 1424 6.28 564 529 142.5
D 7 3 1282 6.24 501 458 132.0
D 3 14 1268 6.14 501 458 132.0
D 6 231 1259 6.07 501 458 132.0

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