ASTROSAT CZTI

Data Quality Report

Orbit 20537

Creation date: 2024-06-27T18:16:30.895399
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/AS1A05_115T03_9000003032_20537cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20537cztM0_level2_quad_clean.evt
Size (bytes)1,694,836,800258,842,880
Size1.6 GB 246.9 MB
Events in quadrant A10,326,3681,714,932
Events in quadrant B10,654,1211,723,757
Events in quadrant C9,377,6821,651,227
Events in quadrant D19,629,2871,379,744

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437213
B0441933
C0408383
D0715823

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198653731.877674%
B198653491.756859%
C198662791.404410%
D19866358818.061009%

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 21564 19867 140 140 0.65% 0.70%
B 21565 19868 63 63 0.29% 0.32%
C 21566 19869 3 3 0.01% 0.02%
D 21566 19869 3387 3387 15.71% 17.05%

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 6 16 1167681 2454.26 2350 2295 474.8
A 5 203 41461 82.48 2350 2295 474.8
A 11 29 28107 54.36 2350 2295 474.8
B 7 220 638151 1423.17 2346 2289 446.8
B 0 197 215476 477.15 2346 2289 446.8
B 0 189 174679 385.84 2346 2289 446.8
C 14 238 346932 652.27 2254 2261 528.4
C 8 208 152743 284.78 2254 2261 528.4
C 9 221 37866 67.38 2254 2261 528.4
D 12 238 5839685 11543.7 2077 2019 505.7
D 1 52 3189949 6303.98 2077 2019 505.7
D 7 238 924315 1823.8 2077 2019 505.7

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