ASTROSAT CZTI

Data Quality Report

Orbit 40881

Creation date: 2024-06-27T22:21:42.385103
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/AS1A12_097T01_9000005574_40881cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40881cztM0_level2_quad_clean.evt
Size (bytes)354,916,80085,302,720
Size338.5 MB 81.4 MB
Events in quadrant A2,734,922580,159
Events in quadrant B3,447,100582,436
Events in quadrant C2,635,627569,051
Events in quadrant D3,941,102509,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109943
B0134062
C0107912
D0151332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487490.184653%
B48742966.073041%
C4874410.841198%
D48741012.072220%

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 6998 4875 8 8 0.11% 0.16%
B 6998 4875 202 202 2.89% 4.14%
C 6998 4875 28 28 0.40% 0.57%
D 6998 4875 89 89 1.27% 1.83%

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 476247 4138.81 559 549 114.9
A 13 248 35911 307.67 559 549 114.9
A 2 79 30537 260.91 559 549 114.9
B 4 171 853155 8046.33 553 540 106.0
B 5 255 390465 3679.81 553 540 106.0
B 0 183 18434 168.87 553 540 106.0
C 15 214 206784 1616.67 547 551 127.6
C 3 233 152030 1187.45 547 551 127.6
C 0 10 130964 1022.31 547 551 127.6
D 12 79 1379020 10387.6 534 518 132.7
D 1 47 177780 1335.74 534 518 132.7
D 13 249 141842 1064.93 534 518 132.7

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