ASTROSAT CZTI

Data Quality Report

Orbit 36184

Creation date: 2022-06-08T06:09:07.878401
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/AS1A10_071T50_9000005166_36184cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36184cztM0_level2_quad_clean.evt
Size (bytes)463,271,04065,056,320
Size441.8 MB 62.0 MB
Events in quadrant A2,610,826415,760
Events in quadrant B3,012,507410,874
Events in quadrant C3,835,359406,231
Events in quadrant D4,207,808361,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112193
B0124712
C0149942
D0161112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5363150.279694%
B53631152.144322%
C53631322.461309%
D53634708.763752%

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 7065 5364 1 1 0.01% 0.02%
B 7065 5364 66 66 0.93% 1.23%
C 7065 5364 125 125 1.77% 2.33%
D 7065 5364 421 421 5.96% 7.85%

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 181767 1454.55 618 605 124.5
A 8 144 21978 171.6 618 605 124.5
A 13 6 11169 84.82 618 605 124.5
B 5 172 322405 2768.01 609 592 116.3
B 5 236 223579 1917.98 609 592 116.3
B 0 213 23832 199.89 609 592 116.3
C 4 254 643861 4584.55 599 604 140.3
C 0 10 320434 2279.45 599 604 140.3
C 15 214 242860 1726.58 599 604 140.3
D 13 249 1154972 8047.9 576 561 143.4
D 12 6 182936 1271.42 576 561 143.4
D 2 250 129537 899.15 576 561 143.4

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