ASTROSAT CZTI

Data Quality Report

Orbit 18166

Creation date: 2024-06-27T17:46:05.425576
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/AS1T03_014T01_9000002704_18166cztM0_level2.evt modeM0/AS1T03_014T01_9000002704_18166cztM0_level2_quad_clean.evt
Size (bytes)518,232,96082,630,080
Size494.2 MB 78.8 MB
Events in quadrant A3,359,710525,047
Events in quadrant B3,397,621533,827
Events in quadrant C3,953,193506,491
Events in quadrant D4,568,224508,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134792
B0135512
C0154292
D0176693

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6133651.059840%
B6133731.190282%
C61333115.070928%
D61321242.022179%

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 7473 6134 1 1 0.01% 0.02%
B 7473 6134 5 5 0.07% 0.08%
C 7473 6134 128 128 1.71% 2.09%
D 7472 6133 74 74 0.99% 1.21%

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 15 174 98001 576.64 847 833 168.5
A 0 226 7643 40.41 847 833 168.5
A 11 29 7576 40.01 847 833 168.5
B 0 189 66907 421.28 832 813 156.9
B 7 220 39154 244.38 832 813 156.9
B 12 111 17743 107.91 832 813 156.9
C 4 254 714908 3920.19 795 803 182.2
C 14 238 124051 676.59 795 803 182.2
C 4 238 13502 69.71 795 803 182.2
D 7 238 1004013 4956.6 827 803 202.4
D 13 168 247142 1217.1 827 803 202.4
D 13 104 71489 349.24 827 803 202.4

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