ASTROSAT CZTI

Data Quality Report

Orbit 17880

Creation date: 2024-06-27T17:42:09.390272
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_075T01_9000002660_17880cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17880cztM0_level2_quad_clean.evt
Size (bytes)484,845,120102,890,880
Size462.4 MB 98.1 MB
Events in quadrant A3,494,090649,565
Events in quadrant B3,578,609667,740
Events in quadrant C3,564,390643,053
Events in quadrant D3,533,486630,503

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156432
B0157303
C0156872
D0160552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75472252.981317%
B75462453.246753%
C75462413.193745%
D75471722.279051%

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 7617 7550 0 0 0.00% 0.00%
B 7616 7549 1 1 0.01% 0.01%
C 7616 7549 0 0 0.00% 0.00%
D 7617 7550 7 7 0.09% 0.09%

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 0 226 7854 37.43 909 886 186.2
A 3 137 7216 34.0 909 886 186.2
A 12 194 6490 30.1 909 886 186.2
B 12 111 21879 118.45 908 883 177.3
B 11 111 19034 102.4 908 883 177.3
B 14 111 16721 89.35 908 883 177.3
C 14 238 131368 629.11 871 876 207.4
C 3 233 32475 152.34 871 876 207.4
C 13 61 6219 25.76 871 876 207.4
D 10 70 60638 255.92 876 852 233.6
D 1 52 60016 253.26 876 852 233.6
D 2 165 43656 183.23 876 852 233.6

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