ASTROSAT CZTI

Data Quality Report

Orbit 24943

Creation date: 2024-06-27T19:11:45.216961
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_200T01_9000003654_24943cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24943cztM0_level2_quad_clean.evt
Size (bytes)536,428,800130,080,960
Size511.6 MB 124.1 MB
Events in quadrant A3,159,796891,709
Events in quadrant B3,654,447900,869
Events in quadrant C4,396,613849,289
Events in quadrant D4,569,857819,952

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139361
B0152471
C0176981
D0181631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68601251.822157%
B68612443.556333%
C68611872.725550%
D68613865.626002%

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 7405 6861 0 0 0.00% 0.00%
B 7406 6862 44 44 0.59% 0.64%
C 7406 6862 0 0 0.00% 0.00%
D 7406 6862 249 249 3.36% 3.63%

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 10479 59.17 817 802 163.5
A 4 2 7862 43.17 817 802 163.5
A 3 137 7471 40.78 817 802 163.5
B 15 33 277043 1805.91 810 789 153.0
B 0 230 57701 372.04 810 789 153.0
B 10 251 46946 301.73 810 789 153.0
C 7 247 1239329 6933.02 775 778 178.6
C 14 238 124465 692.36 775 778 178.6
C 13 61 5326 25.46 775 778 178.6
D 1 52 1042510 5542.78 774 748 187.9
D 1 3 317419 1684.87 774 748 187.9
D 8 195 89547 472.46 774 748 187.9

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