ASTROSAT CZTI

Data Quality Report

Orbit 42779

Creation date: 2024-06-27T22:44:08.129771
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/AS1A05_013T01_9000005822_42779cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42779cztM0_level2_quad_clean.evt
Size (bytes)287,890,56089,317,440
Size274.6 MB 85.2 MB
Events in quadrant A2,788,236608,257
Events in quadrant B2,350,158619,276
Events in quadrant C2,470,985593,041
Events in quadrant D2,664,821539,929

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011217103
B01016290
C01019069
D011424124

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01011
B01020
C01020
D01010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4901110.224444%
B4907120.244549%
C491580.162767%
D4893561.144492%

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 7084 4942 4 4 0.06% 0.08%
B 7084 4944 3 3 0.04% 0.06%
C 7083 4945 4 4 0.06% 0.08%
D 7083 4940 52 52 0.73% 1.05%

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 524716 4467.46 575 564 117.3
A 13 248 20060 166.17 575 564 117.3
A 13 6 9189 73.51 575 564 117.3
B 6 235 37150 334.58 572 557 109.4
B 0 245 18726 166.12 572 557 109.4
B 5 172 16904 149.46 572 557 109.4
C 15 214 198329 1524.18 561 566 129.8
C 14 254 51434 392.05 561 566 129.8
C 15 111 16767 124.86 561 566 129.8
D 13 249 142337 1051.12 553 538 134.9
D 1 52 114992 848.42 553 538 134.9
D 2 249 86672 638.49 553 538 134.9

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