ASTROSAT CZTI

Data Quality Report

Orbit 37402

Creation date: 2024-06-27T21:39:32.800323
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/AS1A09_002T01_9000005322_37402cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37402cztM0_level2_quad_clean.evt
Size (bytes)653,469,12062,432,640
Size623.2 MB 59.5 MB
Events in quadrant A2,787,490441,779
Events in quadrant B2,742,804451,341
Events in quadrant C9,681,069208,968
Events in quadrant D4,217,153413,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116413
B0115782
C0323362
D0161352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5336280.524738%
B5336490.918291%
C5336345464.730135%
D53363135.865817%

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 7128 5337 20 20 0.28% 0.37%
B 7127 5336 21 21 0.29% 0.39%
C 7128 5336 2735 2735 38.37% 51.26%
D 7128 5337 258 258 3.62% 4.83%

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 278296 2278.74 609 597 121.9
A 15 222 77807 633.57 609 597 121.9
A 13 248 28705 230.65 609 597 121.9
B 5 172 183602 1588.0 608 593 115.2
B 0 229 80442 692.86 608 593 115.2
B 0 190 28490 242.07 608 593 115.2
C 1 23 8186721 114660.41 308 310 71.4
C 15 214 124951 1745.75 308 310 71.4
C 0 10 105552 1474.04 308 310 71.4
D 1 47 738327 5247.14 578 562 140.6
D 12 235 380662 2703.35 578 562 140.6
D 13 249 206042 1461.42 578 562 140.6

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