ASTROSAT CZTI

Data Quality Report

Orbit 20201129_A10_021T03_9000004038_level2

Creation date: 2025-12-19T17:12:22.844344
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_021T03_9000004038cztM0_level2.fits modeM0/AS1A10_021T03_9000004038cztM0_level2_quad_clean.evt
Size (bytes)364,288,320147,018,240
Size347.4 MB 140.2 MB
Events in quadrant A2,350,226584,112
Events in quadrant B2,221,828575,664
Events in quadrant C2,294,112553,159
Events in quadrant D1,892,388462,928

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0709600
B0783400
C0737240
D01251950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06740
B06740
C06740
D06740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A330814611.393549%
B330815711.726066%
C330816742.037423%
D33081416912.602400%

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 40360 33074 0 0 0.00% 0.00%
B 40360 33074 0 0 0.00% 0.00%
C 40360 33073 0 0 0.00% 0.00%
D 40360 33012 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 2222 11.04 613 580 148.8
A 0 30 1812 8.28 613 580 148.8
A 7 110 1809 8.26 613 580 148.8
B 2 9 1701 9.79 587 565 116.0
B 5 128 1489 7.96 587 565 116.0
B 3 80 1476 7.85 587 565 116.0
C 1 81 1721 7.53 606 573 152.5
C 1 80 1673 7.21 606 573 152.5
C 12 241 1554 6.43 606 573 152.5
D 15 47 1326 5.93 540 499 139.5
D 7 3 1302 5.76 540 499 139.5
D 11 66 1282 5.61 540 499 139.5

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