ASTROSAT CZTI

Data Quality Report

Orbit 50165

Creation date: 2025-01-07T09:02:04.647913
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/AS1C09_003T01_9000006442_50165cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50165cztM0_level2_quad_clean.evt
Size (bytes)1,606,046,40056,404,800
Size1.5 GB 53.8 MB
Events in quadrant A17,600,062224,140
Events in quadrant B4,344,004780,938
Events in quadrant C16,899,138139,854
Events in quadrant D20,000,77613,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0576860
B0183280
C0555690
D0648430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7894593475.171016%
B7894811.026096%
C7894646081.834305%
D7895777298.442052%

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 7894 7894 5891 5891 74.63% 74.63%
B 7894 7894 37 37 0.47% 0.47%
C 7893 7893 5519 5519 69.92% 69.92%
D 7894 7894 7477 7477 94.72% 94.72%

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 98 10502179 68410.92 610 595 153.5
A 6 250 2101403 13685.38 610 595 153.5
A 8 8 867864 5649.69 610 595 153.5
B 9 218 296304 1708.53 811 783 173.0
B 4 170 166205 956.37 811 783 173.0
B 5 185 111457 639.85 811 783 173.0
C 15 197 4502689 42796.21 365 364 105.2
C 15 196 1311120 12459.2 365 364 105.2
C 4 210 1237023 11754.88 365 364 105.2
D 15 142 5497401 62028.71 270 258 88.6
D 15 168 4281369 48307.24 270 258 88.6
D 15 106 1421485 16036.85 270 258 88.6

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