ASTROSAT CZTI

Data Quality Report

Orbit 00136

Creation date: 2024-06-27T13:56:52.256138
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/AS1P01_140T01_9000000004_00136cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00136cztM0_level2_quad_clean.evt
Size (bytes)1,004,356,80061,260,480
Size957.8 MB 58.4 MB
Events in quadrant A7,036,766370,930
Events in quadrant B7,188,620380,181
Events in quadrant C7,495,912368,457
Events in quadrant D8,328,300346,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248562
B0252821
C0262141
D0287361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5555170.306031%
B555530.054005%
C5555901.620162%
D55553245.832583%

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 7147 5557 185 185 2.59% 3.33%
B 7147 5557 189 189 2.64% 3.40%
C 7147 5557 648 648 9.07% 11.66%
D 7147 5557 920 920 12.87% 16.56%

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 15 233 50862 168.04 1773 1730 292.4
A 13 65 21882 68.92 1773 1730 292.4
A 14 187 20820 65.29 1773 1730 292.4
B 15 64 114413 287.02 1731 1736 392.6
B 2 2 90077 225.03 1731 1736 392.6
B 8 236 85126 212.42 1731 1736 392.6
C 3 32 1117731 2565.53 1545 1602 435.0
C 0 186 143329 325.77 1545 1602 435.0
C 0 203 102175 231.18 1545 1602 435.0
D 13 69 1158373 2679.74 1636 1644 431.7
D 10 244 125220 286.28 1636 1644 431.7
D 0 243 119911 273.98 1636 1644 431.7

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