ASTROSAT CZTI

Data Quality Report

Orbit 13879

Creation date: 2024-06-27T16:47:16.558590
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_010T01_9000002046_13879cztM0_level2.evt modeM0/AS1A04_010T01_9000002046_13879cztM0_level2_quad_clean.evt
Size (bytes)213,557,76031,985,280
Size203.7 MB 30.5 MB
Events in quadrant A1,505,204193,856
Events in quadrant B1,510,312199,197
Events in quadrant C1,442,077195,790
Events in quadrant D1,823,575184,683

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060552
B061371
C058701
D072721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2711291.069716%
B2711431.586131%
C2711150.553301%
D2711702.582073%

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 3952 2712 0 0 0.00% 0.00%
B 3952 2712 1 1 0.03% 0.04%
C 3952 2713 0 0 0.00% 0.00%
D 3952 2713 30 30 0.76% 1.11%

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 23 86597 1139.38 366 358 75.7
A 0 226 8937 113.34 366 358 75.7
A 12 194 2884 33.37 366 358 75.7
B 0 189 21719 305.25 366 359 70.0
B 0 197 20955 294.33 366 359 70.0
B 10 244 19673 276.01 366 359 70.0
C 3 233 38060 444.77 359 361 84.8
C 13 61 2488 25.09 359 361 84.8
C 14 234 1301 11.09 359 361 84.8
D 13 122 311202 3674.85 352 344 84.6
D 1 52 77765 915.24 352 344 84.6
D 13 189 68633 807.29 352 344 84.6

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