ASTROSAT CZTI

Data Quality Report

Orbit 06391

Creation date: 2024-06-27T15:06:39.467724
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/AS1G06_169T01_9000000846_06391cztM0_level2.evt modeM0/AS1G06_169T01_9000000846_06391cztM0_level2_quad_clean.evt
Size (bytes)559,005,12073,454,400
Size533.1 MB 70.1 MB
Events in quadrant A4,974,961435,334
Events in quadrant B3,927,420432,751
Events in quadrant C3,335,238428,674
Events in quadrant D4,196,707419,517

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199023
B0165922
C0151272
D0175292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72957209.869774%
B72952273.111720%
C72951001.370802%
D72952303.152844%

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 7545 7296 263 263 3.49% 3.60%
B 7545 7296 18 18 0.24% 0.25%
C 7545 7296 0 0 0.00% 0.00%
D 7545 7296 89 89 1.18% 1.22%

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 15 1714920 10036.26 837 819 170.8
A 13 251 12374 67.66 837 819 170.8
A 15 236 8707 46.19 837 819 170.8
B 0 228 176987 1040.52 873 850 169.3
B 4 81 107933 632.59 873 850 169.3
B 4 170 79435 464.24 873 850 169.3
C 9 54 21398 104.25 845 845 197.1
C 13 61 6823 30.32 845 845 197.1
C 1 16 4557 18.83 845 845 197.1
D 2 136 347233 1634.11 850 819 212.0
D 13 105 190055 892.66 850 819 212.0
D 2 152 116879 547.48 850 819 212.0

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