ASTROSAT CZTI

Data Quality Report

Orbit 19470

Creation date: 2024-06-27T18:03:14.050358
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_229T02_9000002890_19470cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19470cztM0_level2_quad_clean.evt
Size (bytes)590,304,96071,000,640
Size563.0 MB 67.7 MB
Events in quadrant A3,428,863440,629
Events in quadrant B3,551,549442,510
Events in quadrant C4,113,565420,300
Events in quadrant D6,332,261382,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140892
B0145333
C0167632
D0232832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6661941.411200%
B66601161.741742%
C66601502.252252%
D6660111916.801802%

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 7771 6661 0 0 0.00% 0.00%
B 7770 6660 10 10 0.13% 0.15%
C 7770 6660 2 2 0.03% 0.03%
D 7769 6659 895 895 11.52% 13.44%

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 15 191 26814 146.17 881 865 177.5
A 0 226 7812 39.13 881 865 177.5
A 13 254 7491 37.32 881 865 177.5
B 7 220 57583 341.61 871 850 166.1
B 0 230 23011 133.44 871 850 166.1
B 0 190 19847 114.39 871 850 166.1
C 3 233 482577 2504.64 831 836 192.3
C 9 221 247895 1284.49 831 836 192.3
C 14 238 129047 666.59 831 836 192.3
D 7 238 2877984 15328.11 773 753 187.7
D 12 225 267227 1419.61 773 753 187.7
D 1 52 148003 784.46 773 753 187.7

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