ASTROSAT CZTI

Data Quality Report

Orbit 18821

Creation date: 2024-06-27T17:55:17.087721
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_173T01_9000002812_18821cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18821cztM0_level2_quad_clean.evt
Size (bytes)353,917,44069,658,560
Size337.5 MB 66.4 MB
Events in quadrant A2,815,758447,376
Events in quadrant B2,578,508450,563
Events in quadrant C2,591,683434,267
Events in quadrant D2,391,175425,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01062
B01062
C01073
D01073

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B031
C042
D031

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011808349
B011373597
C011063333
D010944405

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5006861.717938%
B49911222.444400%
C50071472.935890%
D5005731.458541%

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 5325 5037 2 2 0.04% 0.04%
B 5323 5029 10 10 0.19% 0.20%
C 5322 5030 7 7 0.13% 0.14%
D 5524 5034 0 0 0.00% 0.00%

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 8 144 354366 2748.27 630 618 128.7
A 9 143 26134 198.23 630 618 128.7
A 13 254 8553 61.65 630 618 128.7
B 6 36 43956 350.77 626 610 123.6
B 4 216 23556 185.69 626 610 123.6
B 7 220 17602 137.51 626 610 123.6
C 14 238 92271 640.52 602 607 143.1
C 3 233 84850 588.67 602 607 143.1
C 0 207 33055 226.74 602 607 143.1
D 12 225 25951 166.15 615 597 152.6
D 2 234 23609 150.8 615 597 152.6
D 15 0 19492 123.82 615 597 152.6

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