ASTROSAT CZTI

Data Quality Report

Orbit 50933

Creation date: 2025-02-27T09:36:32.710143
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/AS1C07_001T01_9000006450_50933cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50933cztM0_level2_quad_clean.evt
Size (bytes)634,654,080108,216,000
Size605.3 MB 103.2 MB
Events in quadrant A7,595,339669,143
Events in quadrant B4,006,029785,091
Events in quadrant C5,917,564637,525
Events in quadrant D5,369,970642,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279670
B0175940
C0231060
D0214130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A779192311.847003%
B7791991.270697%
C779278610.087269%
D77912493.195995%

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 7791 7791 859 859 11.03% 11.03%
B 7790 7790 59 59 0.76% 0.76%
C 7792 7792 616 616 7.91% 7.91%
D 7791 7791 260 260 3.34% 3.34%

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 14 254 2844300 14546.2 784 765 195.5
A 12 3 385790 1969.61 784 765 195.5
A 7 207 308549 1574.48 784 765 195.5
B 0 171 237315 1364.35 813 784 173.4
B 10 247 201116 1155.55 813 784 173.4
B 7 252 84449 482.59 813 784 173.4
C 5 10 994193 4560.94 764 756 217.8
C 4 210 765756 3512.17 764 756 217.8
C 13 3 270111 1236.63 764 756 217.8
D 3 12 339435 1541.54 787 757 219.7
D 2 249 326000 1480.39 787 757 219.7
D 7 222 221542 1004.93 787 757 219.7

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