ASTROSAT CZTI

Data Quality Report

Orbit 24985

Creation date: 2024-06-27T19:12:21.137336
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/AS1A08_003T18_9000003658_24985cztM0_level2.evt modeM0/AS1A08_003T18_9000003658_24985cztM0_level2_quad_clean.evt
Size (bytes)508,207,68078,840,000
Size484.7 MB 75.2 MB
Events in quadrant A3,221,490500,607
Events in quadrant B3,357,747515,069
Events in quadrant C4,062,742474,451
Events in quadrant D4,316,337451,979

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133102
B0136963
C0160382
D0170652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6380340.532915%
B6379630.987616%
C63791652.586612%
D63791712.680671%

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 7635 6381 0 0 0.00% 0.00%
B 7634 6380 3 3 0.04% 0.05%
C 7634 6380 59 59 0.77% 0.92%
D 7634 6380 113 113 1.48% 1.77%

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 13 254 8536 46.21 836 820 167.0
A 3 137 7429 39.58 836 820 167.0
A 0 226 7326 38.96 836 820 167.0
B 3 64 43171 267.72 835 814 158.2
B 12 111 19159 115.95 835 814 158.2
B 11 111 17590 106.03 835 814 158.2
C 7 247 793520 4277.35 792 798 185.3
C 14 238 127374 682.98 792 798 185.3
C 0 10 38336 202.55 792 798 185.3
D 7 238 652739 3432.55 785 764 189.9
D 10 70 485970 2554.54 785 764 189.9
D 8 195 101554 530.64 785 764 189.9

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