ASTROSAT CZTI

Data Quality Report

Orbit 51790

Creation date: 2025-04-25T19:28:07.606417
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/AS1A13_090T01_9000006464_51790cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51790cztM0_level2_quad_clean.evt
Size (bytes)915,410,88092,090,880
Size873.0 MB 87.8 MB
Events in quadrant A6,178,467650,170
Events in quadrant B9,952,570565,737
Events in quadrant C5,971,078624,760
Events in quadrant D11,203,362424,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234000
B0347422
C0228050
D0384720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75065086.767919%
B7505212928.367755%
C75056648.847435%
D7505277636.988674%

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 7506 7506 416 416 5.54% 5.54%
B 7505 7505 1893 1893 25.22% 25.22%
C 7505 7505 571 571 7.61% 7.61%
D 7505 7505 2534 2534 33.76% 33.76%

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 15 174 926167 4839.69 783 765 191.2
A 4 175 567599 2964.45 783 765 191.2
A 5 243 226891 1182.6 783 765 191.2
B 10 128 6370920 41298.8 716 690 154.2
B 5 32 145452 938.51 716 690 154.2
B 0 171 88695 570.54 716 690 154.2
C 3 233 791120 3934.57 739 732 200.9
C 13 3 702689 3494.36 739 732 200.9
C 15 178 447747 2225.25 739 732 200.9
D 11 129 7097344 40015.06 640 618 177.4
D 8 176 436088 2455.41 640 618 177.4
D 2 249 219977 1236.86 640 618 177.4

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