ASTROSAT CZTI

Data Quality Report

Orbit 21040

Creation date: 2024-06-27T18:22:49.422231
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_088T02_9000003106_21040cztM0_level2.evt modeM0/AS1A05_088T02_9000003106_21040cztM0_level2_quad_clean.evt
Size (bytes)1,440,256,320230,978,880
Size1.3 GB 220.3 MB
Events in quadrant A8,219,2711,520,925
Events in quadrant B10,555,7331,493,418
Events in quadrant C8,285,7671,447,112
Events in quadrant D15,358,8001,309,915

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363293
B0430133
C0362453
D0576374

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177541570.884308%
B177556093.430020%
C177552241.261616%
D17754224512.645038%

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 19879 17757 0 0 0.00% 0.00%
B 19880 17758 279 279 1.40% 1.57%
C 19880 17758 0 0 0.00% 0.00%
D 19879 17757 1955 1955 9.83% 11.01%

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 6 16 32692 71.4 2125 2077 428.8
A 13 254 23683 50.39 2125 2077 428.8
A 0 226 18456 38.2 2125 2077 428.8
B 0 182 1284599 3239.49 2097 2044 395.9
B 7 220 595310 1498.48 2097 2044 395.9
B 0 189 148537 370.01 2097 2044 395.9
C 14 238 314032 653.05 2036 2047 477.7
C 13 61 14454 25.97 2036 2047 477.7
C 8 128 11679 20.16 2036 2047 477.7
D 1 52 7097596 14870.24 1968 1913 477.2
D 9 1 343754 716.39 1968 1913 477.2
D 13 172 209499 435.03 1968 1913 477.2

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