ASTROSAT CZTI

Data Quality Report

Orbit 39296

Creation date: 2024-06-27T22:02:52.133041
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_042T01_9000005462_39296cztM0_level2.fits modeM0/AS1A12_042T01_9000005462_39296cztM0_level2_quad_clean.evt
Size (bytes)1,013,495,040126,685,440
Size966.5 MB 120.8 MB
Events in quadrant A4,840,4741,032,244
Events in quadrant B4,326,1591,050,080
Events in quadrant C4,301,5061,005,880
Events in quadrant D23,326,379102,443

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205503
B0196072
C0189502
D0757172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9297380.408734%
B9297590.634613%
C929760.064537%
D9297847191.115414%

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 12223 9299 21 21 0.17% 0.23%
B 12223 9299 35 35 0.29% 0.38%
C 12223 9299 2 2 0.02% 0.02%
D 12223 9298 7223 7223 59.09% 77.68%

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 616134 3015.87 1008 989 204.0
A 13 248 194007 946.31 1008 989 204.0
A 15 222 130088 632.93 1008 989 204.0
B 5 172 199592 1036.84 1004 977 191.6
B 5 255 114539 592.83 1004 977 191.6
B 12 111 24554 123.08 1004 977 191.6
C 15 214 384059 1687.53 981 983 227.0
C 9 187 66305 287.76 981 983 227.0
C 6 255 7734 29.74 981 983 227.0
D 12 235 20978795 193745.35 446 433 108.3
D 13 249 216332 1993.93 446 433 108.3
D 12 227 199279 1836.44 446 433 108.3

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