ASTROSAT CZTI

Data Quality Report

Orbit 23852

Creation date: 2024-06-27T18:59:22.335988
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/AS1A07_091T10_9000003532_23852cztM0_level2.evt modeM0/AS1A07_091T10_9000003532_23852cztM0_level2_quad_clean.evt
Size (bytes)922,003,200145,296,000
Size879.3 MB 138.6 MB
Events in quadrant A6,465,809886,236
Events in quadrant B6,618,354893,450
Events in quadrant C6,868,648864,060
Events in quadrant D7,083,513851,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274523
B0277573
C0282593
D0294533

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13104680.518926%
B13104920.702076%
C131041641.251526%
D131041160.885226%

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 15229 13106 0 0 0.00% 0.00%
B 15229 13106 11 11 0.07% 0.08%
C 15229 13106 17 17 0.11% 0.13%
D 15229 13106 31 31 0.20% 0.24%

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 13 254 21881 60.54 1675 1640 334.3
A 3 137 14639 38.88 1675 1640 334.3
A 0 226 14368 38.07 1675 1640 334.3
B 15 33 42573 130.72 1659 1618 313.3
B 12 111 38334 117.19 1659 1618 313.3
B 0 189 35703 108.8 1659 1618 313.3
C 14 238 255788 678.52 1610 1624 374.6
C 7 247 162211 428.7 1610 1624 374.6
C 0 10 98590 258.86 1610 1624 374.6
D 1 52 694922 1728.71 1637 1592 401.1
D 8 195 162610 401.47 1637 1592 401.1
D 2 234 54597 132.16 1637 1592 401.1

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