ASTROSAT CZTI

Data Quality Report

Orbit 34039

Creation date: 2024-06-27T20:55:44.544848
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/AS1A06_003T04_9000004866_34039cztM0_level2.evt modeM0/AS1A06_003T04_9000004866_34039cztM0_level2_quad_clean.evt
Size (bytes)1,136,764,800126,685,440
Size1.1 GB 120.8 MB
Events in quadrant A10,387,706727,823
Events in quadrant B7,124,822806,796
Events in quadrant C7,380,523790,666
Events in quadrant D8,809,780766,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381034
B0281923
C0291183
D0336743

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10752266424.776786%
B107524143.850446%
C107522402.232143%
D107525034.678199%

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 13527 10754 1757 1757 12.99% 16.34%
B 13527 10754 307 307 2.27% 2.85%
C 13527 10754 198 198 1.46% 1.84%
D 13527 10754 507 507 3.75% 4.71%

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 15 169 6113820 28227.2 1088 1068 216.6
A 10 83 30058 133.87 1088 1068 216.6
A 13 6 24035 106.06 1088 1068 216.6
B 5 172 1391047 5969.94 1223 1191 232.8
B 0 190 301485 1289.87 1223 1191 232.8
B 0 189 231181 987.89 1223 1191 232.8
C 3 233 1076960 3877.75 1206 1215 277.4
C 0 10 620643 2232.86 1206 1215 277.4
C 15 214 489831 1761.32 1206 1215 277.4
D 2 249 1254755 4224.5 1203 1169 296.7
D 8 195 1183998 3986.05 1203 1169 296.7
D 13 249 536560 1804.23 1203 1169 296.7

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