ASTROSAT CZTI

Data Quality Report

Orbit 01202

Creation date: 2024-06-27T14:09:04.205304
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/AS1G04_007T02_9000000220_01202cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01202cztM0_level2_quad_clean.evt
Size (bytes)960,016,32094,691,520
Size915.5 MB 90.3 MB
Events in quadrant A7,301,304628,281
Events in quadrant B7,407,838631,057
Events in quadrant C7,034,928599,154
Events in quadrant D6,931,652589,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259442
B0262411
C0251361
D0248681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5998230.383461%
B5998240.400133%
C599890.150050%
D5998220.366789%

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 7182 5997 216 216 3.01% 3.60%
B 7183 5998 250 250 3.48% 4.17%
C 7183 5999 192 192 2.67% 3.20%
D 7182 5998 215 215 2.99% 3.58%

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 15 127 89353 197.73 1860 1872 442.4
A 4 32 63827 140.04 1860 1872 442.4
A 12 243 9367 16.94 1860 1872 442.4
B 6 53 58842 125.25 1919 1925 454.4
B 5 249 16174 31.36 1919 1925 454.4
B 0 190 11468 21.0 1919 1925 454.4
C 15 241 309477 651.77 1702 1756 472.1
C 12 4 30120 60.08 1702 1756 472.1
C 3 111 20181 39.02 1702 1756 472.1
D 12 22 285703 545.3 1688 1746 520.7
D 2 152 111676 211.11 1688 1746 520.7
D 1 83 62721 117.09 1688 1746 520.7

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