ASTROSAT CZTI

Data Quality Report

Orbit 42645

Creation date: 2024-06-27T22:42:34.718871
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_174T01_9000005820_42645cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42645cztM0_level2_quad_clean.evt
Size (bytes)412,398,72096,914,880
Size393.3 MB 92.4 MB
Events in quadrant A4,842,420627,939
Events in quadrant B2,711,337676,773
Events in quadrant C3,135,218640,139
Events in quadrant D4,119,352578,294

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182662
B0121182
C0129982
D0164342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58862874.875977%
B5886110.186884%
C5886811.376147%
D58862273.856609%

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 9260 5888 264 264 2.85% 4.48%
B 9260 5888 2 2 0.02% 0.03%
C 9260 5888 62 62 0.67% 1.05%
D 9260 5888 204 204 2.20% 3.46%

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 13 248 1720534 12973.11 640 626 132.6
A 10 83 583180 4394.15 640 626 132.6
A 2 79 56963 424.94 640 626 132.6
B 0 245 120644 946.39 650 633 126.8
B 0 229 19681 150.21 650 633 126.8
B 12 111 16107 122.03 650 633 126.8
C 14 254 338265 2262.12 641 648 149.2
C 15 214 241759 1615.5 641 648 149.2
C 3 233 42281 278.95 641 648 149.2
D 2 249 523198 3377.59 631 613 154.7
D 13 249 392385 2532.11 631 613 154.7
D 1 52 233672 1506.32 631 613 154.7

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