ASTROSAT CZTI

Data Quality Report

Orbit 36710

Creation date: 2024-06-27T21:30:36.752865
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/AS1C07_001T09_9000005236_36710cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36710cztM0_level2_quad_clean.evt
Size (bytes)408,435,840100,474,560
Size389.5 MB 95.8 MB
Events in quadrant A2,641,975687,563
Events in quadrant B3,288,870691,014
Events in quadrant C3,183,973665,695
Events in quadrant D2,912,057645,263

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109103
B0130662
C0124892
D0120712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5044410.812847%
B50441723.409992%
C50441893.747026%
D5044731.447264%

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 7166 5045 23 23 0.32% 0.46%
B 7166 5045 117 117 1.63% 2.32%
C 7166 5045 162 162 2.26% 3.21%
D 7166 5045 64 64 0.89% 1.27%

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 210954 1788.34 592 582 117.6
A 9 143 88531 747.64 592 582 117.6
A 7 3 30420 253.65 592 582 117.6
B 5 255 444797 4033.95 584 568 110.1
B 4 171 428940 3889.95 584 568 110.1
B 5 172 32549 290.41 584 568 110.1
C 0 10 410684 3193.67 557 562 128.4
C 14 254 369556 2873.4 557 562 128.4
C 15 214 228528 1775.2 557 562 128.4
D 13 249 310070 2258.59 565 550 137.0
D 13 171 85949 623.16 565 550 137.0
D 2 153 84100 609.67 565 550 137.0

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