ASTROSAT CZTI

Data Quality Report

Orbit 34087

Creation date: 2024-06-27T20:56:22.998187
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/AS1A05_208T01_9000004870_34087cztM0_level2.evt modeM0/AS1A05_208T01_9000004870_34087cztM0_level2_quad_clean.evt
Size (bytes)519,013,44089,956,800
Size495.0 MB 85.8 MB
Events in quadrant A2,648,169598,172
Events in quadrant B4,950,396590,485
Events in quadrant C3,289,893590,973
Events in quadrant D4,450,790552,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113843
B0184262
C0130152
D0170732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559970.125022%
B55994648.287194%
C5599941.678871%
D55991472.625469%

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 7481 5600 0 0 0.00% 0.00%
B 7481 5600 319 319 4.26% 5.70%
C 7481 5600 78 78 1.04% 1.39%
D 7481 5600 145 145 1.94% 2.59%

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 19175 135.88 678 665 136.2
A 13 6 10324 70.91 678 665 136.2
A 13 254 9384 64.01 678 665 136.2
B 5 172 1008411 7986.64 663 649 126.2
B 5 31 804364 6369.55 663 649 126.2
B 5 15 275576 2178.83 663 649 126.2
C 0 10 403329 2641.78 661 667 152.4
C 15 214 244970 1602.82 661 667 152.4
C 14 67 27280 174.6 661 667 152.4
D 8 195 988648 6193.76 650 633 159.5
D 7 223 269372 1684.7 650 633 159.5
D 2 250 175657 1097.21 650 633 159.5

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