ASTROSAT CZTI

Data Quality Report

Orbit 24735

Creation date: 2024-06-27T19:09:17.312109
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_194T01_9000003620_24735cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24735cztM0_level2_quad_clean.evt
Size (bytes)573,240,96067,714,560
Size546.7 MB 64.6 MB
Events in quadrant A3,342,252415,184
Events in quadrant B3,476,653419,552
Events in quadrant C6,468,470378,888
Events in quadrant D3,639,353388,733

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137072
B0141642
C0239762
D0148232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6419380.591993%
B6419701.090513%
C64192634.097211%
D6418310.483017%

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 7609 6419 0 0 0.00% 0.00%
B 7609 6419 11 11 0.14% 0.17%
C 7609 6419 20 20 0.26% 0.31%
D 7608 6418 5 5 0.07% 0.08%

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 12 96 10363 55.08 864 850 172.7
A 13 254 8112 42.05 864 850 172.7
A 3 137 7515 38.59 864 850 172.7
B 4 80 46804 285.59 855 834 161.0
B 6 36 26327 158.38 855 834 161.0
B 3 64 19917 118.56 855 834 161.0
C 7 247 3114394 16841.73 801 807 184.9
C 14 238 131149 705.03 801 807 184.9
C 3 233 63714 340.27 801 807 184.9
D 1 52 265363 1319.78 825 802 200.5
D 8 195 213059 1058.86 825 802 200.5
D 12 233 29227 141.8 825 802 200.5

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