ASTROSAT CZTI

Data Quality Report

Orbit 29371

Creation date: 2024-06-27T20:03:20.470080
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_279T01_9000004218_29371cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29371cztM0_level2_quad_clean.evt
Size (bytes)763,320,96083,053,440
Size728.0 MB 79.2 MB
Events in quadrant A3,098,551598,810
Events in quadrant B3,425,782597,545
Events in quadrant C3,332,560570,927
Events in quadrant D12,857,287330,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125151
B0136251
C0133531
D0423151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5951761.277096%
B59521021.713710%
C59521222.049731%
D5952453876.243280%

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 7136 5952 0 0 0.00% 0.00%
B 7137 5953 10 10 0.14% 0.17%
C 7137 5953 0 0 0.00% 0.00%
D 7137 5952 4118 4118 57.70% 69.19%

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 11961 70.1 802 787 159.4
A 0 226 7004 39.0 802 787 159.4
A 3 137 6870 38.16 802 787 159.4
B 5 172 78645 532.04 785 767 146.4
B 10 245 71339 482.12 785 767 146.4
B 0 190 50406 339.12 785 767 146.4
C 3 233 141675 795.96 765 774 177.0
C 14 238 127485 715.8 765 774 177.0
C 10 9 52354 291.38 765 774 177.0
D 12 33 9657134 87824.16 459 449 110.0
D 1 52 974666 8860.16 459 449 110.0
D 7 80 175528 1592.28 459 449 110.0

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