ASTROSAT CZTI

Data Quality Report

Orbit 50116

Creation date: 2025-01-03T00:31:35.585664
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_50116cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50116cztM0_level2_quad_clean.evt
Size (bytes)1,085,299,20056,067,840
Size1.0 GB 53.5 MB
Events in quadrant A11,806,812298,742
Events in quadrant B3,358,927630,294
Events in quadrant C13,114,14294,567
Events in quadrant D11,430,494253,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391971
B0141401
C0430091
D0380471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6019329554.743313%
B60191131.877388%
C6020516685.813953%
D6020330354.867110%

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 7124 6020 3280 3280 46.04% 54.49%
B 7124 6020 64 64 0.90% 1.06%
C 7125 6021 4071 4071 57.14% 67.61%
D 7125 6021 3455 3455 48.49% 57.38%

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 6 250 4181896 31227.23 514 501 133.9
A 8 8 3214702 24004.09 514 501 133.9
A 15 191 783786 5849.68 514 501 133.9
B 2 176 277097 2101.73 627 604 131.6
B 0 213 108353 819.04 627 604 131.6
B 10 76 77489 584.43 627 604 131.6
C 4 111 7943325 99702.55 264 260 79.7
C 15 230 732811 9195.09 264 260 79.7
C 15 214 536321 6728.72 264 260 79.7
D 12 191 2924713 22048.71 458 444 132.6
D 15 106 2081833 15693.48 458 444 132.6
D 12 6 525535 3959.14 458 444 132.6

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