ASTROSAT CZTI

Data Quality Report

Orbit 10822

Creation date: 2024-06-27T16:04:11.373840
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/AS1A03_086T01_9000001568_10822cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10822cztM0_level2_quad_clean.evt
Size (bytes)1,275,278,400188,896,320
Size1.2 GB 180.1 MB
Events in quadrant A12,827,6921,137,676
Events in quadrant B9,627,3001,215,016
Events in quadrant C6,428,7231,242,277
Events in quadrant D8,824,1391,188,582

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473334
B0373853
C0281263
D0360023

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13550205415.158672%
B135509186.774908%
C135501310.966790%
D135502461.815498%

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 16075 13552 1208 1208 7.51% 8.91%
B 16075 13553 480 480 2.99% 3.54%
C 16075 13553 1 1 0.01% 0.01%
D 16075 13552 72 72 0.45% 0.53%

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 8 5 6578122 20319.6 1593 1565 323.7
A 13 251 98500 299.5 1593 1565 323.7
A 0 226 14244 39.17 1593 1565 323.7
B 4 239 2903095 9147.44 1660 1629 317.2
B 15 204 79346 245.02 1660 1629 317.2
B 0 85 40401 122.23 1660 1629 317.2
C 3 254 23570 57.73 1640 1655 379.6
C 13 61 12161 27.67 1640 1655 379.6
C 8 222 7163 14.51 1640 1655 379.6
D 8 195 1325746 3343.62 1647 1608 396.0
D 1 52 594010 1495.89 1647 1608 396.0
D 13 104 207685 520.37 1647 1608 396.0

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