ASTROSAT CZTI

Data Quality Report

Orbit 21656

Creation date: 2024-06-27T18:30:44.325070
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_002T02_9000003206_21656cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21656cztM0_level2_quad_clean.evt
Size (bytes)809,766,720118,059,840
Size772.3 MB 112.6 MB
Events in quadrant A5,182,594733,916
Events in quadrant B5,465,083750,186
Events in quadrant C5,342,101705,314
Events in quadrant D7,827,575662,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216496
B0224327
C0222922
D0302376

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10449540.516796%
B104511161.109942%
C104531621.549794%
D104504324.133971%

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 12912 10453 3 3 0.02% 0.03%
B 12913 10455 23 23 0.18% 0.22%
C 12913 10455 0 0 0.00% 0.00%
D 12912 10453 294 294 2.28% 2.81%

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 15 236 109014 412.96 1313 1288 260.9
A 13 170 17551 62.34 1313 1288 260.9
A 13 254 13184 45.6 1313 1288 260.9
B 3 64 121427 483.36 1320 1286 248.6
B 0 229 47717 186.8 1320 1286 248.6
B 6 36 46485 181.85 1320 1286 248.6
C 9 54 228740 783.25 1258 1265 290.4
C 14 238 198949 680.67 1258 1265 290.4
C 10 22 9903 29.74 1258 1265 290.4
D 1 20 1371939 4522.72 1249 1214 303.1
D 1 52 1026218 3382.01 1249 1214 303.1
D 7 238 495622 1631.3 1249 1214 303.1

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