ASTROSAT CZTI

Data Quality Report

Orbit 12399

Creation date: 2024-06-27T16:26:42.665060
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/AS1G08_083T02_9000001840_12399cztM0_level2.evt modeM0/AS1G08_083T02_9000001840_12399cztM0_level2_quad_clean.evt
Size (bytes)868,026,240163,923,840
Size827.8 MB 156.3 MB
Events in quadrant A7,479,8061,043,953
Events in quadrant B6,374,1521,067,253
Events in quadrant C5,044,7911,058,804
Events in quadrant D6,612,4101,000,101

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302203
B0267382
C0233002
D0275992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114862522.193975%
B114862482.159150%
C11486250.217656%
D114862462.141738%

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 13327 11488 42 42 0.32% 0.37%
B 13327 11488 155 155 1.16% 1.35%
C 13327 11488 0 0 0.00% 0.00%
D 13327 11489 243 243 1.82% 2.12%

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 1 162 595230 2225.42 1312 1286 266.9
A 13 251 406241 1517.31 1312 1286 266.9
A 1 178 341936 1276.37 1312 1286 266.9
B 4 239 945157 3738.05 1326 1294 252.5
B 0 230 91703 358.05 1326 1294 252.5
B 0 219 80558 313.92 1326 1294 252.5
C 8 112 10156 29.61 1290 1296 299.2
C 13 61 9408 27.11 1290 1296 299.2
C 14 234 5601 14.39 1290 1296 299.2
D 10 50 638246 2080.2 1270 1232 306.2
D 1 52 419869 1367.08 1270 1232 306.2
D 10 199 240168 780.26 1270 1232 306.2

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