ASTROSAT CZTI

Data Quality Report

Orbit 21567

Creation date: 2024-06-27T18:29:47.775763
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/AS1A06_009T03_9000003198_21567cztM0_level2.evt modeM0/AS1A06_009T03_9000003198_21567cztM0_level2_quad_clean.evt
Size (bytes)357,073,92066,110,400
Size340.5 MB 63.0 MB
Events in quadrant A2,490,040426,700
Events in quadrant B2,586,759434,367
Events in quadrant C2,510,710416,313
Events in quadrant D2,913,410400,877

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099441
B0103401
C0101571
D0114891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A460290.195567%
B4602150.325945%
C4602380.825728%
D4602581.260322%

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 4602 4602 1 1 0.02% 0.02%
B 4602 4602 0 0 0.00% 0.00%
C 4602 4602 0 0 0.00% 0.00%
D 4602 4602 51 51 1.11% 1.11%

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 13 254 6193 42.87 645 635 129.7
A 0 226 5675 38.87 645 635 129.7
A 8 31 5395 36.71 645 635 129.7
B 0 230 34880 288.46 644 632 118.7
B 0 190 13939 112.08 644 632 118.7
B 12 111 12930 103.58 644 632 118.7
C 14 238 100638 708.36 616 623 141.2
C 3 233 5519 34.68 616 623 141.2
C 13 61 4330 26.25 616 623 141.2
D 13 153 144946 969.03 623 608 149.0
D 2 136 123840 827.33 623 608 149.0
D 12 235 112250 749.52 623 608 149.0

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