ASTROSAT CZTI

Data Quality Report

Orbit 36312

Creation date: 2022-06-18T16:09:12.529496
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/AS1A11_089T02_9000005188_36312cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36312cztM0_level2_quad_clean.evt
Size (bytes)1,126,175,040133,522,560
Size1.0 GB 127.3 MB
Events in quadrant A5,203,660888,660
Events in quadrant B10,551,682798,774
Events in quadrant C5,631,623869,378
Events in quadrant D11,991,160737,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223394
B0385733
C0233383
D0429833

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10805450.416474%
B10805177016.381305%
C108051241.147617%
D10805182916.927348%

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 13580 10807 32 32 0.24% 0.30%
B 13580 10807 1518 1518 11.18% 14.05%
C 13580 10807 108 108 0.80% 1.00%
D 13580 10807 1882 1882 13.86% 17.41%

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 10 83 318644 1284.99 1225 1202 247.0
A 9 143 110308 441.66 1225 1202 247.0
A 13 6 20725 79.03 1225 1202 247.0
B 4 171 3406893 15650.58 1129 1098 217.6
B 5 172 2003908 9203.47 1129 1098 217.6
B 5 236 516268 2367.35 1129 1098 217.6
C 0 10 462172 1674.54 1179 1185 275.3
C 15 214 455235 1649.34 1179 1185 275.3
C 0 207 110528 397.19 1179 1185 275.3
D 12 227 2699353 9986.8 1109 1079 270.2
D 12 235 2534549 9376.83 1109 1079 270.2
D 12 6 1696458 6274.9 1109 1079 270.2

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