ASTROSAT CZTI

Data Quality Report

Orbit 18590

Creation date: 2024-06-27T17:52:04.204322
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/AS1A05_075T05_9000002764_18590cztM0_level2.evt modeM0/AS1A05_075T05_9000002764_18590cztM0_level2_quad_clean.evt
Size (bytes)111,533,76032,417,280
Size106.4 MB 30.9 MB
Events in quadrant A756,963213,771
Events in quadrant B787,127218,653
Events in quadrant C849,882211,572
Events in quadrant D860,423207,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036131
B036351
C037991
D039111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176830.169683%
B176850.282805%
C1768251.414027%
D1768251.414027%

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 1768 1768 0 0 0.00% 0.00%
B 1768 1768 0 0 0.00% 0.00%
C 1768 1768 0 0 0.00% 0.00%
D 1768 1768 8 8 0.45% 0.45%

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 2797 61.89 196 192 42.1
A 0 226 1727 36.47 196 192 42.1
A 3 137 1677 35.28 196 192 42.1
B 0 229 6457 155.32 198 193 40.3
B 12 111 4745 112.87 198 193 40.3
B 11 111 4153 98.19 198 193 40.3
C 4 254 66762 1426.58 190 191 46.7
C 14 238 29356 624.99 190 191 46.7
C 8 128 4484 92.0 190 191 46.7
D 1 52 123458 2668.97 187 181 46.2
D 10 50 12033 256.59 187 181 46.2
D 7 238 10786 229.59 187 181 46.2

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