ASTROSAT CZTI

Data Quality Report

Orbit 20170924_G07_014T02_9000001556_level2

Creation date: 2017-10-18T16:21:55.884051
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1G07_014T02_9000001556cztM0_level2.evt modeM0/AS1G07_014T02_9000001556cztM0_level2_quad_clean.evt
Size (bytes)3,161,733,120478,540,800
Size2.9 GB 456.4 MB
Events in quadrant A18,623,5842,967,069
Events in quadrant B27,215,5052,925,371
Events in quadrant C18,313,3332,979,193
Events in quadrant D28,845,2972,815,381

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08340
B08340
C08340
D08340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0837360
B01076170
C0833690
D01131280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A408633740.915253%
B4086326646.519345%
C408633140.768421%
D4086316964.150454%

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 46263 40867 7 7 0.02% 0.02%
B 46263 40867 1475 1475 3.19% 3.61%
C 46263 40868 0 0 0.00% 0.00%
D 46263 40867 1172 1172 2.53% 2.87%

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 1 162 66636 64.1 4788 4682 966.5
A 0 226 43791 40.47 4788 4682 966.5
A 15 174 42374 39.0 4788 4682 966.5
B 4 239 7932618 8930.96 4713 4599 887.7
B 0 214 285175 316.07 4713 4599 887.7
B 0 85 244459 270.2 4713 4599 887.7
C 13 61 34855 27.99 4690 4709 1076.9
C 14 234 23251 17.22 4690 4709 1076.9
C 8 222 18497 12.8 4690 4709 1076.9
D 13 104 3407441 3086.09 4596 4475 1102.7
D 1 52 2522419 2283.48 4596 4475 1102.7
D 8 195 2065444 1869.06 4596 4475 1102.7

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