ASTROSAT CZTI

Data Quality Report

Orbit 15434

Creation date: 2024-06-27T17:08:29.579226
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/AS1T02_080T01_9000002276_15434cztM0_level2.evt modeM0/AS1T02_080T01_9000002276_15434cztM0_level2_quad_clean.evt
Size (bytes)546,592,320106,246,080
Size521.3 MB 101.3 MB
Events in quadrant A3,784,877675,979
Events in quadrant B3,711,965691,540
Events in quadrant C3,929,714683,793
Events in quadrant D4,616,557642,689

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163450
B0159480
C0165040
D0188220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7528921.222104%
B7528580.770457%
C7528170.225824%
D75281692.244952%

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 7833 7529 43 43 0.55% 0.57%
B 7833 7529 9 9 0.11% 0.12%
C 7833 7529 2 2 0.03% 0.03%
D 7833 7529 121 121 1.54% 1.61%

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 14 238 205606 1133.91 887 865 180.6
A 14 237 91349 501.12 887 865 180.6
A 9 143 23511 125.42 887 865 180.6
B 4 142 46080 266.09 893 868 169.9
B 0 219 25584 145.47 893 868 169.9
B 0 229 25267 143.6 893 868 169.9
C 3 233 545681 2760.35 855 860 197.4
C 7 247 25865 126.69 855 860 197.4
C 8 128 10957 51.15 855 860 197.4
D 1 52 800539 3831.17 850 824 208.7
D 5 222 281354 1343.93 850 824 208.7
D 13 122 79185 375.4 850 824 208.7

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