ASTROSAT CZTI

Data Quality Report

Orbit 24724

Creation date: 2024-06-27T19:09:11.096238
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/AS1T03_194T01_9000003620_24724cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24724cztM0_level2_quad_clean.evt
Size (bytes)534,196,800103,080,960
Size509.4 MB 98.3 MB
Events in quadrant A3,604,556690,036
Events in quadrant B3,803,471690,794
Events in quadrant C4,624,992638,890
Events in quadrant D3,699,135643,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146964
B0153072
C0189872
D0148912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65861442.186456%
B65861502.277558%
C65862503.795931%
D65861111.685393%

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 7811 6586 0 0 0.00% 0.00%
B 7811 6586 2 2 0.03% 0.03%
C 7811 6586 0 0 0.00% 0.00%
D 7811 6586 8 8 0.10% 0.12%

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 10158 49.99 933 918 184.9
A 8 4 8961 43.51 933 918 184.9
A 0 226 8020 38.42 933 918 184.9
B 0 230 192326 1112.59 908 886 172.1
B 0 189 38171 216.69 908 886 172.1
B 12 111 20501 114.0 908 886 172.1
C 7 247 1079565 5371.24 869 877 200.8
C 14 238 139329 689.41 869 877 200.8
C 3 233 18225 86.38 869 877 200.8
D 8 195 140336 643.18 899 873 216.8
D 1 52 90799 414.72 899 873 216.8
D 7 238 80249 366.07 899 873 216.8

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