ASTROSAT CZTI

Data Quality Report

Orbit 18535

Creation date: 2024-06-27T17:51:16.414334
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_103T02_9000002750_18535cztM0_level2.evt modeM0/AS1A05_103T02_9000002750_18535cztM0_level2_quad_clean.evt
Size (bytes)930,882,240153,984,960
Size887.8 MB 146.9 MB
Events in quadrant A6,383,154944,095
Events in quadrant B6,421,395967,201
Events in quadrant C6,187,918946,031
Events in quadrant D8,318,023906,456

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273833
B0273013
C0266543
D0334063

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130202842.181260%
B130202742.104455%
C130202612.004608%
D130215684.362184%

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 14580 13020 61 61 0.42% 0.47%
B 14580 13020 28 28 0.19% 0.22%
C 14580 13020 0 0 0.00% 0.00%
D 14581 13021 365 365 2.50% 2.80%

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 0 13 279553 868.59 1575 1538 320.1
A 13 254 20505 59.26 1575 1538 320.1
A 15 174 15279 42.93 1575 1538 320.1
B 7 220 115372 373.81 1579 1535 304.5
B 15 222 42899 135.83 1579 1535 304.5
B 0 244 38997 123.01 1579 1535 304.5
C 14 238 233497 653.42 1519 1529 355.0
C 8 128 12148 29.91 1519 1529 355.0
C 3 233 10933 26.49 1519 1529 355.0
D 7 238 1257235 3350.81 1529 1484 374.8
D 1 52 861424 2294.64 1529 1484 374.8
D 15 0 191314 506.54 1529 1484 374.8

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