ASTROSAT CZTI

Data Quality Report

Orbit 04135

Creation date: 2024-06-27T14:39:52.736116
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/AS1SLEW_01234_9000000531_04135cztM0_level2.evt modeM0/AS1SLEW_01234_9000000531_04135cztM0_level2_quad_clean.evt
Size (bytes)118,681,9209,348,480
Size113.2 MB 8.9 MB
Events in quadrant A725,26443,615
Events in quadrant B796,91043,496
Events in quadrant C686,94741,611
Events in quadrant D1,277,70139,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031290
B032670
C030740
D047870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A153310.065232%
B153330.195695%
C153300.000000%
D153322014.350946%

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 1533 1533 1 1 0.07% 0.07%
B 1533 1533 2 2 0.13% 0.13%
C 1533 1533 0 0 0.00% 0.00%
D 1533 1533 215 215 14.02% 14.02%

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 0 118 14563 371.32 179 175 38.7
A 13 14 12004 305.28 179 175 38.7
A 15 234 4030 99.49 179 175 38.7
B 15 204 25547 699.34 179 174 36.3
B 4 81 21892 598.6 179 174 36.3
B 15 54 14986 408.25 179 174 36.3
C 10 65 2634 58.33 174 175 42.2
C 13 61 1468 30.67 174 175 42.2
C 12 4 1297 26.61 174 175 42.2
D 13 53 531308 13264.31 158 153 40.0
D 2 63 54029 1345.42 158 153 40.0
D 12 233 39996 994.98 158 153 40.0

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