ASTROSAT CZTI

Data Quality Report

Orbit 34526

Creation date: 2022-02-15T23:04:16.647798
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/AS1A06_005T01_9000004932_34526cztM0_level2.evt modeM0/AS1A06_005T01_9000004932_34526cztM0_level2_quad_clean.evt
Size (bytes)530,812,80094,806,720
Size506.2 MB 90.4 MB
Events in quadrant A2,506,337662,365
Events in quadrant B4,020,157626,709
Events in quadrant C2,758,009652,072
Events in quadrant D6,426,554552,878

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110003
B0153892
C0113152
D0227672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A537680.148810%
B53765169.598214%
C5376210.390625%
D5376104519.438244%

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 7379 5377 1 1 0.01% 0.02%
B 7379 5377 405 405 5.49% 7.53%
C 7379 5377 10 10 0.14% 0.19%
D 7379 5377 959 959 13.00% 17.84%

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 37800 294.37 630 618 126.3
A 9 143 20907 160.63 630 618 126.3
A 13 6 14503 109.93 630 618 126.3
B 5 172 850353 7460.49 598 584 113.9
B 4 170 307994 2698.89 598 584 113.9
B 5 200 243302 2130.93 598 584 113.9
C 15 214 242222 1723.96 607 613 140.1
C 0 10 70572 499.18 607 613 140.1
C 14 67 62076 438.56 607 613 140.1
D 10 118 1559717 11686.47 554 539 133.4
D 7 80 1080246 8092.7 554 539 133.4
D 8 195 872283 6533.96 554 539 133.4

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