ASTROSAT CZTI

Data Quality Report

Orbit 24234

Creation date: 2024-06-27T19:03:48.632633
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/AS1A07_118T01_9000003586_24234cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24234cztM0_level2_quad_clean.evt
Size (bytes)554,932,80089,516,160
Size529.2 MB 85.4 MB
Events in quadrant A3,257,277565,313
Events in quadrant B3,652,815579,985
Events in quadrant C3,792,880550,996
Events in quadrant D5,641,121539,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139692
B0151732
C0152362
D0214312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68091281.879865%
B68091862.731679%
C68092203.231018%
D68104646.813510%

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 7224 6810 0 0 0.00% 0.00%
B 7224 6810 27 27 0.37% 0.40%
C 7224 6810 55 55 0.76% 0.81%
D 7225 6810 339 339 4.69% 4.98%

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 11962 65.45 842 820 170.2
A 3 1 10026 54.08 842 820 170.2
A 0 226 7324 38.21 842 820 170.2
B 15 33 215202 1342.17 833 811 159.7
B 12 17 141577 881.25 833 811 159.7
B 12 111 19074 114.33 833 811 159.7
C 2 16 354942 1849.15 807 811 191.5
C 7 247 158505 823.42 807 811 191.5
C 14 238 127597 662.03 807 811 191.5
D 12 33 1496343 7515.36 808 783 199.0
D 7 238 459452 2304.86 808 783 199.0
D 12 233 355323 1781.6 808 783 199.0

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