ASTROSAT CZTI

Data Quality Report

Orbit 20200703_A09_147T01_9000003754_level2

Creation date: 2021-01-10T05:09:55.909661
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/AS1A09_147T01_9000003754cztM0_level2_bc.evt modeM0/AS1A09_147T01_9000003754cztM0_level2_quad_clean.evt
Size (bytes)6,331,847,0402,173,083,840
Size5.9 GB 2.0 GB
Events in quadrant A37,490,31314,160,575
Events in quadrant B34,176,72314,456,510
Events in quadrant C32,523,26313,778,521
Events in quadrant D77,180,34212,964,609

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031120
B031120
C031120
D031120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03325200
B03224380
C03204170
D04821930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15268024381.596804%
B15268023001.506419%
C15268027361.791983%
D152679144509.464301%

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 177044 152660 239 239 0.13% 0.16%
B 177044 152661 14 14 0.01% 0.01%
C 177044 152660 2 2 0.00% 0.00%
D 177043 152654 2177 2177 1.23% 1.43%

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 0 13 3602714 1981.14 8459 8339 1814.3
A 11 29 943790 515.6 8459 8339 1814.3
A 6 16 261458 139.51 8459 8339 1814.3
B 0 190 353071 217.14 8561 8379 1587.4
B 0 219 248055 150.98 8561 8379 1587.4
B 0 229 191415 115.3 8561 8379 1587.4
C 3 233 1065977 552.74 8168 8168 1913.8
C 13 61 46651 20.11 8168 8168 1913.8
C 15 127 31450 12.17 8168 8168 1913.8
D 1 52 17632750 9609.55 7946 7750 1834.1
D 7 80 13671519 7449.8 7946 7750 1834.1
D 12 2 6255456 3406.39 7946 7750 1834.1

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