ASTROSAT CZTI

Data Quality Report

Orbit 08370

Creation date: 2024-06-27T15:31:45.529290
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/AS1A03_036T01_9000001164_08370cztM0_level2.evt modeM0/AS1A03_036T01_9000001164_08370cztM0_level2_quad_clean.evt
Size (bytes)536,227,200106,038,720
Size511.4 MB 101.1 MB
Events in quadrant A4,435,604656,355
Events in quadrant B3,715,793701,074
Events in quadrant C3,579,370678,667
Events in quadrant D3,998,448652,000

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184292
B0159821
C0160111
D0170831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75185216.930035%
B75181011.343442%
C7518941.250333%
D75181501.995211%

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 7568 7520 394 394 5.21% 5.24%
B 7568 7520 2 2 0.03% 0.03%
C 7568 7520 25 25 0.33% 0.33%
D 7568 7520 61 61 0.81% 0.81%

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 15 236 1041059 5821.24 875 854 178.7
A 5 16 21999 118.33 875 854 178.7
A 0 226 8304 41.69 875 854 178.7
B 0 214 71234 404.61 901 877 173.9
B 4 81 44540 251.1 901 877 173.9
B 0 230 30920 172.77 901 877 173.9
C 1 16 177284 862.3 872 872 204.6
C 13 61 6678 28.38 872 872 204.6
C 3 202 2258 6.77 872 872 204.6
D 1 52 178545 772.85 867 843 229.9
D 7 71 119468 515.91 867 843 229.9
D 2 14 117318 506.56 867 843 229.9

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