ASTROSAT CZTI

Data Quality Report

Orbit 23548

Creation date: 2024-06-27T18:56:00.255140
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/AS1A07_011T01_9000003482_23548cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23548cztM0_level2_quad_clean.evt
Size (bytes)553,844,160104,169,600
Size528.2 MB 99.3 MB
Events in quadrant A3,503,492674,487
Events in quadrant B3,837,282698,604
Events in quadrant C3,545,098664,801
Events in quadrant D5,403,376620,101

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231
B0242
C0241
D0231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01504
B01504
C01517
D01515

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015281445
B016409476
C015654517
D022011838

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7145240.335899%
B7146851.189477%
C7153981.370055%
D71135417.605792%

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 9822 7207 0 0 0.00% 0.00%
B 9820 7206 19 19 0.19% 0.26%
C 9821 7201 1 1 0.01% 0.01%
D 9820 7169 454 454 4.62% 6.33%

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 13 252 62818 349.58 890 872 177.2
A 13 254 12593 66.15 890 872 177.2
A 8 31 9415 48.21 890 872 177.2
B 3 64 142513 843.52 893 872 167.9
B 0 189 83184 490.2 893 872 167.9
B 0 229 44427 259.38 893 872 167.9
C 14 238 138404 692.02 859 865 198.8
C 7 247 24948 121.17 859 865 198.8
C 10 91 12618 59.13 859 865 198.8
D 1 52 1861960 9443.83 823 802 197.1
D 9 85 391563 1982.79 823 802 197.1
D 2 234 29738 146.83 823 802 197.1

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