ASTROSAT CZTI

Data Quality Report

Orbit 17668

Creation date: 2024-06-27T17:39:19.063009
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/AS1A05_208T01_9000002614_17668cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17668cztM0_level2_quad_clean.evt
Size (bytes)1,599,353,280291,297,600
Size1.5 GB 277.8 MB
Events in quadrant A10,909,1261,823,067
Events in quadrant B11,794,1521,844,760
Events in quadrant C12,020,6721,779,742
Events in quadrant D12,123,1481,757,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481514
B0503624
C0500424
D0522454

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04800
B04800
C04800
D04800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A235051870.795575%
B235053071.306105%
C235053031.289087%
D235064161.769761%

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 26526 23509 0 0 0.00% 0.00%
B 26526 23508 48 48 0.18% 0.20%
C 26526 23510 2 2 0.01% 0.01%
D 26527 23510 240 240 0.90% 1.02%

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 14 237 68983 116.51 2817 2754 568.5
A 0 226 24767 38.72 2817 2754 568.5
A 3 137 21125 32.32 2817 2754 568.5
B 7 220 275586 505.89 2811 2735 539.3
B 4 216 182658 333.59 2811 2735 539.3
B 0 189 78896 141.21 2811 2735 539.3
C 3 233 972859 1515.57 2713 2728 640.1
C 14 238 414094 642.65 2713 2728 640.1
C 5 218 58630 87.33 2713 2728 640.1
D 1 52 624812 933.18 2737 2664 666.7
D 13 189 467034 696.53 2737 2664 666.7
D 7 238 236816 351.21 2737 2664 666.7

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