ASTROSAT CZTI

Data Quality Report

Orbit 31698

Creation date: 2024-06-27T20:31:39.590822
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/AS1T04_034T01_9000004632_31698cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31698cztM0_level2_quad_clean.evt
Size (bytes)616,602,24065,387,520
Size588.0 MB 62.4 MB
Events in quadrant A3,722,411391,779
Events in quadrant B5,708,008386,570
Events in quadrant C4,009,042375,040
Events in quadrant D4,796,005373,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153102
B0213112
C0160522
D0186363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64901532.357473%
B64902163.328197%
C64902483.821263%
D64893435.285868%

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 7706 6492 27 27 0.35% 0.42%
B 7706 6492 36 36 0.47% 0.55%
C 7706 6492 37 37 0.48% 0.57%
D 7705 6491 214 214 2.78% 3.30%

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 0 13 202534 1118.24 907 893 180.3
A 14 238 18530 97.81 907 893 180.3
A 13 254 12078 62.03 907 893 180.3
B 6 159 1787864 10666.33 893 874 167.5
B 0 190 210057 1248.59 893 874 167.5
B 4 80 87317 515.97 893 874 167.5
C 3 233 161575 804.41 867 875 199.8
C 10 22 150681 749.88 867 875 199.8
C 14 238 142247 707.66 867 875 199.8
D 13 249 498351 2440.91 865 845 203.8
D 8 195 441546 2162.21 865 845 203.8
D 12 227 370960 1815.89 865 845 203.8

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