ASTROSAT CZTI

Data Quality Report

Orbit 35768

Creation date: 2022-07-18T22:04:45.811625
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_058T14_9000005134_35768cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35768cztM0_level2_quad_clean.evt
Size (bytes)507,119,04097,473,600
Size483.6 MB 93.0 MB
Events in quadrant A2,931,819680,017
Events in quadrant B3,117,402680,209
Events in quadrant C2,829,680659,101
Events in quadrant D6,141,356582,465

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119643
B0124802
C0114252
D0216602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4987150.300782%
B4987971.945057%
C4987470.942450%
D498794819.009425%

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 7020 4988 3 3 0.04% 0.06%
B 7020 4988 64 64 0.91% 1.28%
C 7020 4988 35 35 0.50% 0.70%
D 7020 4988 1071 1071 15.26% 21.47%

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 15 169 213841 1625.31 658 649 131.2
A 10 83 150808 1144.77 658 649 131.2
A 13 6 9144 64.76 658 649 131.2
B 5 172 272942 2248.74 641 627 121.1
B 0 190 86699 710.77 641 627 121.1
B 5 255 82090 672.71 641 627 121.1
C 15 214 209387 1475.04 620 625 141.5
C 0 10 123160 865.79 620 625 141.5
C 9 187 34716 240.88 620 625 141.5
D 1 52 3056401 20741.51 602 588 147.3
D 13 249 261749 1772.65 602 588 147.3
D 10 118 220023 1489.43 602 588 147.3

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