ASTROSAT CZTI

Data Quality Report

Orbit 03708

Creation date: 2024-06-27T14:32:41.436790
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_009T01_9000000482_03708cztM0_level2.evt modeM0/AS1G05_009T01_9000000482_03708cztM0_level2_quad_clean.evt
Size (bytes)1,431,267,840221,595,840
Size1.3 GB 211.3 MB
Events in quadrant A9,012,9661,406,521
Events in quadrant B15,642,9871,361,110
Events in quadrant C8,256,3531,389,715
Events in quadrant D9,247,6801,342,416

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381814
B0581853
C0363593
D0392006

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175705132.919750%
B17570189310.774047%
C175702801.593625%
D175693792.157209%

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 25667 17572 89 89 0.35% 0.51%
B 25667 17573 1239 1239 4.83% 7.05%
C 25667 17573 0 0 0.00% 0.00%
D 25667 17572 93 93 0.36% 0.53%

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 13 251 250905 560.51 2177 2127 443.8
A 0 50 238516 532.6 2177 2127 443.8
A 15 174 75377 165.04 2177 2127 443.8
B 14 167 4582337 11257.9 2116 2063 406.8
B 5 70 1332277 3269.55 2116 2063 406.8
B 3 0 916689 2248.07 2116 2063 406.8
C 13 61 17985 32.4 2106 2115 489.8
C 9 247 9136 14.33 2106 2115 489.8
C 14 67 6797 9.56 2106 2115 489.8
D 2 37 375284 732.81 2108 2048 509.3
D 1 84 116758 225.22 2108 2048 509.3
D 13 137 116134 224.0 2108 2048 509.3

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
Veto Counter