ASTROSAT CZTI

Data Quality Report

Orbit 14882

Creation date: 2024-06-27T17:00:52.532835
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/AS1T02_054T01_9000002200_14882cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14882cztM0_level2_quad_clean.evt
Size (bytes)564,200,64088,580,160
Size538.1 MB 84.5 MB
Events in quadrant A3,115,685582,216
Events in quadrant B4,866,522545,625
Events in quadrant C3,025,791578,512
Events in quadrant D5,657,605542,225

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130830
B0184640
C0127880
D0209340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6212881.416613%
B621267010.785576%
C6212600.965873%
D621293615.067611%

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 7082 6213 1 1 0.01% 0.02%
B 7082 6212 384 384 5.42% 6.18%
C 7082 6213 1 1 0.01% 0.02%
D 7082 6213 914 914 12.91% 14.71%

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 15 239 135649 905.92 745 731 148.9
A 12 189 50143 331.78 745 731 148.9
A 14 237 22971 149.33 745 731 148.9
B 10 16 1622046 12202.16 702 684 132.9
B 3 64 316596 2377.51 702 684 132.9
B 0 189 93405 697.81 702 684 132.9
C 3 233 192483 1168.25 719 721 164.1
C 0 207 25087 148.44 719 721 164.1
C 13 61 5331 28.08 719 721 164.1
D 7 254 2962094 18042.78 691 674 164.1
D 2 234 28005 166.52 691 674 164.1
D 7 38 15812 92.23 691 674 164.1

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