ASTROSAT CZTI

Data Quality Report

Orbit 20180701_A04_099T01_9000002204_level2

Creation date: 2018-07-04T11:41:35.921819
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A04_099T01_9000002204cztM0_level2_bc.evt modeM0/AS1A04_099T01_9000002204cztM0_level2_quad_clean.evt
Size (bytes)3,506,166,7201,174,792,320
Size3.3 GB 1.1 GB
Events in quadrant A20,139,4607,501,792
Events in quadrant B32,677,0287,402,175
Events in quadrant C22,540,2087,223,331
Events in quadrant D24,492,0897,082,070

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018920
B018920
C018920
D018920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01945150
B02431410
C02003960
D02086690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9299714401.548437%
B9299775038.068002%
C9299714161.522630%
D9299720352.188243%

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 107913 93001 8 8 0.01% 0.01%
B 107911 92990 2807 2807 2.60% 3.02%
C 107911 92998 41 41 0.04% 0.04%
D 107911 92997 356 356 0.33% 0.38%

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 12 189 379631 340.12 5071 4982 1101.5
A 4 2 141143 123.61 5071 4982 1101.5
A 3 1 81762 69.7 5071 4982 1101.5
B 10 16 13230222 14150.69 4905 4774 934.6
B 3 64 356584 376.42 4905 4774 934.6
B 0 229 172628 179.6 4905 4774 934.6
C 3 233 1738028 1645.38 4869 4807 1053.4
C 9 236 1580673 1496.0 4869 4807 1053.4
C 7 247 120961 110.27 4869 4807 1053.4
D 7 254 2917664 2609.31 4885 4752 1116.4
D 7 223 1320640 1178.74 4885 4752 1116.4
D 10 70 654619 582.13 4885 4752 1116.4

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