ASTROSAT CZTI

Data Quality Report

Orbit 35863

Creation date: 2022-06-08T19:33:50.573356
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/AS1A11_080T01_9000005146_35863cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35863cztM0_level2_quad_clean.evt
Size (bytes)841,737,600114,088,320
Size802.7 MB 108.8 MB
Events in quadrant A8,279,231764,522
Events in quadrant B5,528,268770,786
Events in quadrant C4,475,846786,784
Events in quadrant D6,712,088619,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296893
B0213402
C0177022
D0248482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7359132017.937220%
B73595857.949450%
C73592513.410790%
D7359123916.836527%

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 10015 7361 990 990 9.89% 13.45%
B 10015 7361 478 478 4.77% 6.49%
C 10015 7361 228 228 2.28% 3.10%
D 10015 7361 1162 1162 11.60% 15.79%

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 15 169 4864902 28695.09 827 811 169.5
A 10 83 177777 1043.99 827 811 169.5
A 7 48 25265 144.26 827 811 169.5
B 5 172 1690324 10653.57 825 806 158.6
B 5 255 338733 2130.86 825 806 158.6
B 0 213 148481 931.19 825 806 158.6
C 15 208 522010 2709.05 822 833 192.4
C 15 214 300829 1559.36 822 833 192.4
C 1 23 298043 1544.88 822 833 192.4
D 1 52 2732153 15366.4 719 703 177.8
D 10 118 496129 2787.13 719 703 177.8
D 13 249 226529 1270.44 719 703 177.8

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