ASTROSAT CZTI

Data Quality Report

Orbit 23178

Creation date: 2024-06-27T18:50:57.191031
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_003T05_9000003426_23178cztM0_level2.evt modeM0/AS1A08_003T05_9000003426_23178cztM0_level2_quad_clean.evt
Size (bytes)388,837,44046,111,680
Size370.8 MB 44.0 MB
Events in quadrant A3,039,989273,602
Events in quadrant B2,107,375288,574
Events in quadrant C2,320,707273,518
Events in quadrant D4,026,970269,333

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118822
B087882
C093762
D0148383

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A411842710.369111%
B41181293.132589%
C41181543.739679%
D411786120.913286%

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 4403 4119 222 222 5.04% 5.39%
B 4403 4120 0 0 0.00% 0.00%
C 4403 4120 7 7 0.16% 0.17%
D 4402 4119 591 591 13.43% 14.35%

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 6 16 1053262 9931.25 515 504 106.0
A 13 254 5923 51.12 515 504 106.0
A 3 137 4770 40.24 515 504 106.0
B 12 111 13128 117.48 536 520 107.3
B 11 111 11622 103.45 536 520 107.3
B 14 111 10072 89.0 536 520 107.3
C 0 10 241402 1957.9 510 513 123.0
C 14 238 81147 655.38 510 513 123.0
C 7 247 7438 56.29 510 513 123.0
D 12 233 1012540 8340.18 481 466 121.3
D 7 238 1002360 8256.29 481 466 121.3
D 13 153 134092 1101.17 481 466 121.3

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