ASTROSAT CZTI

Data Quality Report

Orbit 34297

Creation date: 2022-01-31T12:19:50.935309
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/AS1T04_086T01_9000004890_34297cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34297cztM0_level2_quad_clean.evt
Size (bytes)470,448,00084,749,760
Size448.7 MB 80.8 MB
Events in quadrant A2,711,208535,529
Events in quadrant B3,595,851543,402
Events in quadrant C3,035,716553,934
Events in quadrant D4,505,493522,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119363
B0143932
C0123702
D0174792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5885110.186916%
B58851823.092608%
C5885290.492778%
D5885731.240442%

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 7198 5886 4 4 0.06% 0.07%
B 7198 5886 129 129 1.79% 2.19%
C 7198 5886 21 21 0.29% 0.36%
D 7198 5886 76 76 1.06% 1.29%

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 9 143 34366 245.25 681 667 137.4
A 10 83 28368 201.6 681 667 137.4
A 13 6 12808 88.36 681 667 137.4
B 5 172 538282 4164.15 669 652 129.1
B 4 251 137483 1059.81 669 652 129.1
B 0 190 97646 751.25 669 652 129.1
C 15 214 252897 1623.2 669 673 155.4
C 0 10 84750 541.08 669 673 155.4
C 9 187 34362 216.8 669 673 155.4
D 12 235 1084356 6157.45 665 652 176.0
D 8 195 494251 2804.56 665 652 176.0
D 7 223 213839 1211.3 665 652 176.0

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