ASTROSAT CZTI

Data Quality Report

Orbit 20160615_G05_083T01_9000000494_level2

Creation date: 2025-10-30T21:28:10.450301
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/AS1G05_083T01_9000000494cztM0_level2.fits modeM0/AS1G05_083T01_9000000494cztM0_level2_quad_clean.evt
Size (bytes)751,907,520944,112,960
Size717.1 MB 900.4 MB
Events in quadrant A4,465,1165,951,000
Events in quadrant B4,363,3486,111,984
Events in quadrant C4,213,7525,224,568
Events in quadrant D3,768,0865,353,555

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02063570
B01913010
C02618220
D02051560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01270
B01270
C01270
D01270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017580
B017640
C017560
D017620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8684438834.471236%
B8688414181.632061%
C86871961411.066984%
D8686524222.788235%

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 104393 86863 0 0 0.00% 0.00%
B 104393 86928 0 0 0.00% 0.00%
C 104393 86904 0 0 0.00% 0.00%
D 104393 86905 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 14 188 4544 11.52 1159 1083 300.4
A 0 29 4330 10.81 1159 1083 300.4
A 14 204 3931 9.48 1159 1083 300.4
B 2 9 3901 12.1 1155 1100 231.5
B 12 226 3305 9.52 1155 1100 231.5
B 14 254 3103 8.65 1155 1100 231.5
C 1 81 3163 7.2 1111 1026 296.7
C 1 80 3102 7.0 1111 1026 296.7
C 12 241 2933 6.43 1111 1026 296.7
D 3 14 2871 6.49 1080 978 291.8
D 3 31 2751 6.08 1080 978 291.8
D 6 231 2746 6.06 1080 978 291.8

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