ASTROSAT CZTI

Data Quality Report

Orbit 20240517_A13_037T01_9000006256_level2

Creation date: 2024-05-21T09:00:26.494683
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/AS1A13_037T01_9000006256cztM0_level2.fits modeM0/AS1A13_037T01_9000006256cztM0_level2_quad_clean.evt
Size (bytes)882,446,400983,782,080
Size841.6 MB 938.2 MB
Events in quadrant A5,102,7645,928,074
Events in quadrant B5,052,0506,036,189
Events in quadrant C5,178,7425,690,965
Events in quadrant D4,408,6825,164,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03629820
B02285680
C02331650
D02815780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019790
B019780
C019800
D019780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10199743204.235419%
B10207824412.391309%
C10207929882.927145%
D10206161866.061081%

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 134318 102143 0 0 0.00% 0.00%
B 134319 102230 0 0 0.00% 0.00%
C 134319 102083 0 0 0.00% 0.00%
D 134319 102047 0 0 0.00% 0.00%

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 7 110 4233 8.65 1332 1240 346.2
A 0 29 3964 7.87 1332 1240 346.2
A 14 95 3843 7.52 1332 1240 346.2
B 2 9 4922 14.12 1336 1269 258.8
B 2 8 3861 10.02 1336 1269 258.8
B 3 17 3648 9.19 1336 1269 258.8
C 3 202 4003 7.75 1371 1272 352.1
C 1 81 3978 7.68 1371 1272 352.1
C 1 80 3810 7.21 1371 1272 352.1
D 3 14 3249 5.96 1266 1146 353.0
D 12 6 3199 5.82 1266 1146 353.0
D 10 189 3190 5.79 1266 1146 353.0

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