ASTROSAT CZTI

Data Quality Report

Orbit 37410

Creation date: 2024-06-27T21:39:39.745339
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/AS1A09_002T01_9000005322_37410cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37410cztM0_level2_quad_clean.evt
Size (bytes)533,476,80082,811,520
Size508.8 MB 79.0 MB
Events in quadrant A2,857,373538,158
Events in quadrant B2,891,438538,639
Events in quadrant C2,805,594551,246
Events in quadrant D7,210,160475,190

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120334
B0124732
C0118961
D02551312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A578290.155655%
B5782631.089588%
C5783210.363133%
D577989115.417892%

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 7095 5784 2 2 0.03% 0.03%
B 7095 5784 35 35 0.49% 0.61%
C 7095 5784 11 11 0.16% 0.19%
D 7095 5783 901 901 12.70% 15.58%

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 262229 2016.84 644 632 129.7
A 9 143 26764 201.47 644 632 129.7
A 13 6 19683 146.88 644 632 129.7
B 5 172 138166 1119.38 636 618 122.9
B 5 255 98674 797.99 636 618 122.9
B 4 232 70925 572.16 636 618 122.9
C 15 214 245636 1681.23 629 633 145.7
C 14 254 32473 218.49 629 633 145.7
C 0 10 30393 204.22 629 633 145.7
D 12 227 4050496 27290.06 598 581 148.4
D 13 249 232384 1561.99 598 581 148.4
D 2 249 212304 1426.68 598 581 148.4

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