ASTROSAT CZTI

Data Quality Report

Orbit 04934

Creation date: 2024-06-27T14:49:01.714551
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/AS1G05_021T01_9000000624_04934cztM0_level2.evt modeM0/AS1G05_021T01_9000000624_04934cztM0_level2_quad_clean.evt
Size (bytes)756,509,760108,578,880
Size721.5 MB 103.5 MB
Events in quadrant A3,236,344752,946
Events in quadrant B3,242,473758,077
Events in quadrant C12,080,827609,937
Events in quadrant D3,919,189719,784

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137822
B0138181
C0402941
D0160611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63931261.970906%
B6393681.063663%
C6393303247.426873%
D63931812.831222%

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 7627 6392 51 51 0.67% 0.80%
B 7628 6393 2 2 0.03% 0.03%
C 7628 6393 2987 2987 39.16% 46.72%
D 7628 6393 108 108 1.42% 1.69%

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 31 132009 833.14 783 766 157.5
A 0 50 39119 243.47 783 766 157.5
A 13 251 36143 224.58 783 766 157.5
B 4 80 55095 371.9 784 768 146.1
B 15 204 54566 368.28 784 768 146.1
B 0 219 33109 221.39 784 768 146.1
C 9 247 9494988 64461.03 651 655 147.3
C 1 16 38115 254.33 651 655 147.3
C 13 61 5393 32.17 651 655 147.3
D 2 33 237744 1307.98 759 738 181.2
D 13 53 218692 1202.84 759 738 181.2
D 12 233 160216 880.12 759 738 181.2

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