ASTROSAT CZTI

Data Quality Report

Orbit 13817

Creation date: 2024-06-27T16:46:28.774396
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/AS1A04_199T01_9000002040_13817cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13817cztM0_level2_quad_clean.evt
Size (bytes)3,055,129,920481,999,680
Size2.8 GB 459.7 MB
Events in quadrant A18,354,3363,047,551
Events in quadrant B18,997,8643,078,654
Events in quadrant C18,508,0693,019,876
Events in quadrant D34,040,8842,779,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07940
B07940
C07940
D07940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08029511
B0814669
C0802419
D01272719

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A389118722.241012%
B389119392.413199%
C389116241.603660%
D3891133408.583691%

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 51193 38916 1 1 0.00% 0.00%
B 51193 38915 23 23 0.04% 0.06%
C 51193 38919 2 2 0.00% 0.01%
D 51193 38915 2669 2669 5.21% 6.86%

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 8 15 98870 98.65 4707 4599 955.6
A 1 162 93101 92.62 4707 4599 955.6
A 0 226 43346 40.55 4707 4599 955.6
B 4 173 164941 178.15 4700 4579 900.2
B 12 111 105418 112.02 4700 4579 900.2
B 0 214 104301 110.78 4700 4579 900.2
C 3 233 598013 559.46 4579 4596 1060.7
C 13 61 32429 26.24 4579 4596 1060.7
C 0 207 23636 17.95 4579 4596 1060.7
D 1 52 11400014 10092.9 4455 4345 1129.1
D 10 157 1583415 1398.55 4455 4345 1129.1
D 5 222 1247491 1101.03 4455 4345 1129.1

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