ASTROSAT CZTI

Data Quality Report

Orbit 08278

Creation date: 2024-06-27T15:30:29.454804
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/AS1G07_065T02_9000001150_08278cztM0_level2.evt modeM0/AS1G07_065T02_9000001150_08278cztM0_level2_quad_clean.evt
Size (bytes)484,240,32074,335,680
Size461.8 MB 70.9 MB
Events in quadrant A3,116,731465,114
Events in quadrant B3,355,225468,679
Events in quadrant C3,112,783464,439
Events in quadrant D4,656,746416,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0181
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132043
B0137402
C0133612
D0178442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244911.457399%
B62441171.873799%
C6244831.329276%
D62445488.776425%

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 7489 6244 0 0 0.00% 0.00%
B 7489 6245 10 10 0.13% 0.16%
C 7489 6244 0 0 0.00% 0.00%
D 7489 6244 379 379 5.06% 6.07%

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 13 14 18885 112.65 803 786 160.7
A 0 226 7614 42.5 803 786 160.7
A 13 248 7281 40.42 803 786 160.7
B 0 214 86533 578.52 801 783 148.2
B 11 51 59533 396.36 801 783 148.2
B 10 16 41792 276.67 801 783 148.2
C 5 128 28186 155.12 784 790 176.6
C 9 54 26290 144.39 784 790 176.6
C 13 61 5923 29.06 784 790 176.6
D 1 52 1468946 7938.11 748 729 185.0
D 13 169 75357 403.49 748 729 185.0
D 12 233 69826 373.58 748 729 185.0

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