ASTROSAT CZTI

Data Quality Report

Orbit 36432

Creation date: 2022-07-19T03:16:19.494973
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/AS1C07_009T01_9000005200_36432cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36432cztM0_level2_quad_clean.evt
Size (bytes)478,598,40094,605,120
Size456.4 MB 90.2 MB
Events in quadrant A2,953,651621,515
Events in quadrant B3,645,353617,892
Events in quadrant C3,236,256614,683
Events in quadrant D4,250,695590,423

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125993
B0146392
C0132432
D0166522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6015100.166251%
B60151001.662510%
C6015821.363259%
D60152083.458022%

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 9511 6017 0 0 0.00% 0.00%
B 9511 6017 56 56 0.59% 0.93%
C 9511 6017 52 52 0.55% 0.86%
D 9511 6017 195 195 2.05% 3.24%

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 10 83 202629 1421.72 709 694 142.0
A 13 254 10482 68.91 709 694 142.0
A 3 137 7220 45.95 709 694 142.0
B 5 255 254275 1963.81 692 677 129.1
B 0 189 164645 1269.73 692 677 129.1
B 5 172 146278 1127.5 692 677 129.1
C 0 10 274047 1739.21 682 685 157.2
C 15 214 258088 1637.67 682 685 157.2
C 12 249 32030 199.43 682 685 157.2
D 12 227 1037908 6302.79 687 668 164.6
D 12 16 107171 647.16 687 668 164.6
D 10 199 92726 559.39 687 668 164.6

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