ASTROSAT CZTI

Data Quality Report

Orbit 17710

Creation date: 2024-06-27T17:39:52.626061
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/AS1T03_040T01_9000002628_17710cztM0_level2.evt modeM0/AS1T03_040T01_9000002628_17710cztM0_level2_quad_clean.evt
Size (bytes)1,045,800,000138,245,760
Size997.4 MB 131.8 MB
Events in quadrant A5,890,370855,529
Events in quadrant B6,330,800864,319
Events in quadrant C6,389,504832,172
Events in quadrant D12,202,409755,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260763
B0270433
C0265983
D0451013

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12700870.685039%
B127001461.149606%
C127011501.181009%
D12701207816.360916%

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 14060 12702 6 6 0.04% 0.05%
B 14060 12701 30 30 0.21% 0.24%
C 14061 12702 0 0 0.00% 0.00%
D 14061 12701 1615 1615 11.49% 12.72%

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 15 174 81223 260.01 1510 1475 306.7
A 0 226 13149 38.06 1510 1475 306.7
A 3 137 11662 33.21 1510 1475 306.7
B 10 245 152116 520.84 1506 1464 289.3
B 0 189 111313 379.77 1506 1464 289.3
B 0 197 72182 244.49 1506 1464 289.3
C 3 233 459293 1351.86 1446 1454 338.7
C 14 238 221964 651.1 1446 1454 338.7
C 5 218 62572 180.46 1446 1454 338.7
D 7 238 6868461 20374.7 1371 1328 337.0
D 13 168 52338 151.35 1371 1328 337.0
D 2 234 50073 144.63 1371 1328 337.0

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