ASTROSAT CZTI

Data Quality Report

Orbit 17706

Creation date: 2024-06-27T17:39:49.974845
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/AS1T03_040T01_9000002628_17706cztM0_level2.evt modeM0/AS1T03_040T01_9000002628_17706cztM0_level2_quad_clean.evt
Size (bytes)603,714,24095,287,680
Size575.7 MB 90.9 MB
Events in quadrant A3,247,236615,442
Events in quadrant B3,515,787628,885
Events in quadrant C3,577,566599,703
Events in quadrant D7,457,147542,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146152
B0151272
C0148612
D0270902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71511532.139561%
B71521752.446868%
C71521762.460850%
D7152128717.994966%

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 7351 7153 0 0 0.00% 0.00%
B 7352 7154 11 11 0.15% 0.15%
C 7352 7154 0 0 0.00% 0.00%
D 7352 7153 969 969 13.18% 13.55%

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 0 226 7419 38.26 844 824 172.4
A 12 194 6320 31.89 844 824 172.4
A 3 137 6284 31.68 844 824 172.4
B 0 189 62617 380.02 843 818 162.6
B 0 197 47016 284.08 843 818 162.6
B 0 230 34511 207.19 843 818 162.6
C 3 233 245334 1299.19 803 805 188.2
C 14 238 125064 660.19 803 805 188.2
C 5 218 50690 265.04 803 805 188.2
D 7 238 4478649 23889.18 766 742 187.4
D 2 234 25646 132.86 766 742 187.4
D 10 70 24745 128.05 766 742 187.4

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