ASTROSAT CZTI

Data Quality Report

Orbit 20220318_A10_123T11_9000005014_level2

Creation date: 2026-01-02T03:26:32.884218
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_123T11_9000005014cztM0_level2.fits modeM0/AS1A10_123T11_9000005014cztM0_level2_quad_clean.evt
Size (bytes)440,127,360396,512,640
Size419.7 MB 378.1 MB
Events in quadrant A2,606,0782,062,838
Events in quadrant B2,607,3682,386,942
Events in quadrant C2,697,0442,324,088
Events in quadrant D2,264,2902,080,529

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01253730
B01009800
C0994030
D01352400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09380
B09380
C09380
D09380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01750
B01750
C01750
D01750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4593642029.147510%
B459365351.164664%
C459363050.663967%
D4593613282.890979%

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 63327 45887 0 0 0.00% 0.00%
B 63327 45936 0 0 0.00% 0.00%
C 63327 45934 0 0 0.00% 0.00%
D 63327 45866 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 9 19 2119 8.8 680 639 168.2
A 7 110 2066 8.48 680 639 168.2
A 0 29 1963 7.87 680 639 168.2
B 2 9 2264 11.51 691 657 139.6
B 3 80 2058 10.04 691 657 139.6
B 2 8 1828 8.39 691 657 139.6
C 1 81 2224 8.62 712 672 180.1
C 1 80 2111 7.99 712 672 180.1
C 3 202 2082 7.83 712 672 180.1
D 10 113 1676 6.24 650 595 173.2
D 10 189 1654 6.11 650 595 173.2
D 7 3 1652 6.1 650 595 173.2

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