ASTROSAT CZTI

Data Quality Report

Orbit 44038

Creation date: 2024-06-27T22:58:35.764702
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/AS1A13_025T01_9000005936_44038cztM0_level2.fits modeM0/AS1A13_025T01_9000005936_44038cztM0_level2_quad_clean.evt
Size (bytes)476,749,440111,790,080
Size454.7 MB 106.6 MB
Events in quadrant A4,438,435756,228
Events in quadrant B3,364,168782,253
Events in quadrant C3,366,526747,171
Events in quadrant D5,982,383652,674

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177632
B0142702
C0142562
D0222722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63941362.126994%
B6394751.172975%
C6394941.470128%
D63934737.398717%

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 7604 6395 20 20 0.26% 0.31%
B 7604 6394 21 21 0.28% 0.33%
C 7604 6395 44 44 0.58% 0.69%
D 7603 6394 408 408 5.37% 6.38%

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 10 83 1337658 8693.17 749 734 153.8
A 15 222 79942 515.04 749 734 153.8
A 14 238 46278 296.14 749 734 153.8
B 0 200 124992 848.59 753 731 146.4
B 0 213 109968 745.99 753 731 146.4
B 4 170 63357 427.68 753 731 146.4
C 3 233 223928 1279.89 741 745 174.4
C 1 241 172703 986.13 741 745 174.4
C 14 254 62333 353.19 741 745 174.4
D 1 52 1737859 9482.13 721 699 183.2
D 5 222 263093 1432.25 721 699 183.2
D 13 249 202276 1100.29 721 699 183.2

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