ASTROSAT CZTI

Data Quality Report

Orbit 41724

Creation date: 2024-06-27T22:32:03.626427
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/AS1A12_077T12_9000005692_41724cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41724cztM0_level2_quad_clean.evt
Size (bytes)314,130,24085,965,120
Size299.6 MB 82.0 MB
Events in quadrant A2,891,198577,378
Events in quadrant B2,613,282589,567
Events in quadrant C2,868,915545,711
Events in quadrant D2,846,437523,908

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118653
B0115572
C0119272
D0123582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5235400.764088%
B5235541.031519%
C52352033.877746%
D5235771.470869%

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 7028 5236 35 35 0.50% 0.67%
B 7028 5236 41 41 0.58% 0.78%
C 7028 5236 189 189 2.69% 3.61%
D 7028 5236 87 87 1.24% 1.66%

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 10 83 526232 4455.13 568 557 118.0
A 2 79 130974 1105.29 568 557 118.0
A 7 3 29038 241.38 568 557 118.0
B 0 186 175178 1579.16 565 550 110.6
B 4 141 171872 1549.27 565 550 110.6
B 15 35 22481 198.32 565 550 110.6
C 0 10 530381 4139.48 542 545 128.0
C 15 214 208357 1623.58 542 545 128.0
C 14 67 15896 119.93 542 545 128.0
D 12 79 395146 2922.51 553 538 135.0
D 13 249 228454 1687.97 553 538 135.0
D 12 217 23856 172.7 553 538 135.0

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