ASTROSAT CZTI

Data Quality Report

Orbit 50389

Creation date: 2025-01-21T10:15:06.138835
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_50389cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50389cztM0_level2_quad_clean.evt
Size (bytes)535,392,00093,784,320
Size510.6 MB 89.4 MB
Events in quadrant A4,647,544602,230
Events in quadrant B4,207,081648,862
Events in quadrant C4,918,885593,662
Events in quadrant D5,530,658532,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181852
B0172242
C0191412
D0210973

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66293435.174234%
B66293996.019007%
C66293084.646251%
D66285798.735667%

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 7659 6629 257 257 3.36% 3.88%
B 7659 6630 291 291 3.80% 4.39%
C 7659 6630 233 233 3.04% 3.51%
D 7658 6628 505 505 6.59% 7.62%

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 3 98 415659 2415.85 699 683 171.8
A 10 253 214319 1243.72 699 683 171.8
A 3 231 195759 1135.67 699 683 171.8
B 5 185 794403 5343.04 698 674 148.6
B 3 249 255866 1717.84 698 674 148.6
B 8 128 93928 627.75 698 674 148.6
C 0 208 417293 2138.45 690 683 194.8
C 14 245 266326 1363.54 690 683 194.8
C 4 110 223190 1142.12 690 683 194.8
D 3 12 507278 2698.04 670 646 187.8
D 7 61 433401 2304.61 670 646 187.8
D 8 192 298724 1587.4 670 646 187.8

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