ASTROSAT CZTI

Data Quality Report

Orbit 25947

Creation date: 2024-06-27T19:23:08.763806
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/AS1A07_068T01_9000003760_25947cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25947cztM0_level2_quad_clean.evt
Size (bytes)1,255,466,880229,144,320
Size1.2 GB 218.5 MB
Events in quadrant A9,095,7831,440,355
Events in quadrant B9,164,6131,442,897
Events in quadrant C9,026,4881,372,190
Events in quadrant D9,454,7591,380,593

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392310
B0393960
C0389550
D0411250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189312021.067033%
B189322381.257131%
C189322891.526516%
D189322801.478977%

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 21222 18935 4 4 0.02% 0.02%
B 21223 18935 2 2 0.01% 0.01%
C 21223 18935 0 0 0.00% 0.00%
D 21223 18935 88 88 0.41% 0.46%

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 13 144201 306.51 2306 2257 463.1
A 12 16 54386 112.56 2306 2257 463.1
A 13 254 27758 55.06 2306 2257 463.1
B 0 190 181959 406.82 2284 2219 441.8
B 12 111 55096 119.68 2284 2219 441.8
B 11 111 49614 107.27 2284 2219 441.8
C 14 238 348306 675.88 2187 2199 512.1
C 3 233 142769 274.51 2187 2199 512.1
C 13 61 15262 25.51 2187 2199 512.1
D 1 52 737446 1379.79 2220 2165 532.9
D 12 1 246607 458.71 2220 2165 532.9
D 2 234 77077 140.58 2220 2165 532.9

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