ASTROSAT CZTI

Data Quality Report

Orbit 50313

Creation date: 2025-01-16T14:22:47.378792
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/AS1C09_003T01_9000006442_50313cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50313cztM0_level2_quad_clean.evt
Size (bytes)3,445,257,600136,215,360
Size3.2 GB 129.9 MB
Events in quadrant A32,898,417921,224
Events in quadrant B14,694,0871,731,472
Events in quadrant C39,771,93428,499
Events in quadrant D38,735,552158,288

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01106723
B0565244
C01308473
D01278713

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18631914449.079491%
B1863115468.297998%
C186311837098.599109%
D186311700391.261875%

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 19836 18635 7729 7729 38.96% 41.48%
B 19836 18635 957 957 4.82% 5.14%
C 19835 18630 12462 12462 62.83% 66.89%
D 19836 18632 10704 10704 53.96% 57.45%

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 0 98 10188347 26472.9 1537 1499 384.8
A 3 231 4691733 12188.67 1537 1499 384.8
A 4 249 4269377 11091.08 1537 1499 384.8
B 4 206 3131866 7580.71 1937 1870 412.9
B 10 254 1560028 3773.79 1937 1870 412.9
B 1 238 562362 1357.49 1937 1870 412.9
C 15 197 16465864 153444.74 316 309 107.3
C 4 111 9369892 87316.42 316 309 107.3
C 15 230 5346133 49818.46 316 309 107.3
D 7 61 23010601 126357.43 569 544 182.1
D 2 37 7132875 39166.48 569 544 182.1
D 12 6 1003145 5505.68 569 544 182.1

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