ASTROSAT CZTI

Data Quality Report

Orbit 28863

Creation date: 2024-06-27T19:57:19.478325
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/AS1A10_123T06_9000004138_28863cztM0_level2.evt modeM0/AS1A10_123T06_9000004138_28863cztM0_level2_quad_clean.evt
Size (bytes)727,223,04083,246,400
Size693.5 MB 79.4 MB
Events in quadrant A3,061,951568,249
Events in quadrant B3,176,439585,484
Events in quadrant C2,963,125550,874
Events in quadrant D12,434,073413,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125871
B0128741
C0122191
D0408215

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5733540.941915%
B57341282.232299%
C57341212.110220%
D5733414272.248387%

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 7043 5733 0 0 0.00% 0.00%
B 7044 5734 54 54 0.77% 0.94%
C 7044 5734 0 0 0.00% 0.00%
D 7042 5732 4781 4781 67.89% 83.41%

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 14 235 178935 1205.62 744 733 147.8
A 13 254 10733 67.65 744 733 147.8
A 1 113 8807 54.62 744 733 147.8
B 5 255 188821 1372.76 736 722 137.0
B 15 32 75281 544.14 736 722 137.0
B 10 246 23880 169.01 736 722 137.0
C 14 238 132399 808.37 705 711 162.9
C 4 254 26150 156.16 705 711 162.9
C 3 233 25196 150.3 705 711 162.9
D 8 195 9707158 68682.11 594 579 141.3
D 1 52 420754 2973.09 594 579 141.3
D 7 80 39242 273.57 594 579 141.3

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