ASTROSAT CZTI

Data Quality Report

Orbit 07145

Creation date: 2024-06-27T15:16:08.983732
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/AS1G06_029T02_9000000974_07145cztM0_level2.evt modeM0/AS1G06_029T02_9000000974_07145cztM0_level2_quad_clean.evt
Size (bytes)976,671,360171,829,440
Size931.4 MB 163.9 MB
Events in quadrant A6,357,8171,078,467
Events in quadrant B6,502,3151,098,439
Events in quadrant C6,197,2981,085,836
Events in quadrant D9,612,2291,013,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279384
B0283603
C0277863
D0377703

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13438820.610210%
B134381000.744158%
C13438710.528352%
D134386845.090043%

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 16028 13439 4 4 0.02% 0.03%
B 16028 13439 8 8 0.05% 0.06%
C 16028 13440 9 9 0.06% 0.07%
D 16028 13440 516 516 3.22% 3.84%

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 8 15 258127 802.85 1569 1531 319.6
A 13 248 58710 178.9 1569 1531 319.6
A 0 226 14962 42.02 1569 1531 319.6
B 4 81 131218 431.08 1580 1544 300.8
B 0 214 102682 336.22 1580 1544 300.8
B 0 219 89034 290.85 1580 1544 300.8
C 4 254 142771 399.75 1528 1536 353.3
C 10 22 69996 193.77 1528 1536 353.3
C 13 61 11799 29.05 1528 1536 353.3
D 2 216 2447115 6651.48 1498 1452 367.7
D 2 14 885124 2403.33 1498 1452 367.7
D 8 195 309239 837.09 1498 1452 367.7

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