ASTROSAT CZTI

Data Quality Report

Orbit 41378

Creation date: 2024-06-27T22:28:20.878413
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/AS1A12_035T01_9000005660_41378cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41378cztM0_level2_quad_clean.evt
Size (bytes)363,009,60093,594,240
Size346.2 MB 89.3 MB
Events in quadrant A3,064,377626,278
Events in quadrant B2,619,111642,062
Events in quadrant C3,202,467598,235
Events in quadrant D4,094,812557,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124993
B0118622
C0132362
D0160512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5864140.238745%
B586450.085266%
C58642053.495907%
D58642434.143929%

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 7178 5865 8 8 0.11% 0.14%
B 7178 5865 0 0 0.00% 0.00%
C 7178 5865 202 202 2.81% 3.44%
D 7178 5865 224 224 3.12% 3.82%

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 10 83 546331 4097.07 640 625 133.2
A 12 189 18352 133.09 640 625 133.2
A 13 248 17368 125.7 640 625 133.2
B 0 190 61599 488.41 635 616 124.9
B 0 186 16695 128.77 635 616 124.9
B 12 111 16030 123.45 635 616 124.9
C 0 10 546634 3799.28 612 615 143.7
C 15 214 242787 1685.07 612 615 143.7
C 9 54 12776 84.62 612 615 143.7
D 1 52 684696 4469.33 619 599 153.1
D 1 47 497512 3246.42 619 599 153.1
D 5 222 151613 986.6 619 599 153.1

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