ASTROSAT CZTI

Data Quality Report

Orbit 07961

Creation date: 2024-06-27T15:26:04.365057
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_077T01_9000001090_07961cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07961cztM0_level2_quad_clean.evt
Size (bytes)523,676,16081,924,480
Size499.4 MB 78.1 MB
Events in quadrant A3,110,514539,324
Events in quadrant B3,187,838564,983
Events in quadrant C5,732,373413,868
Events in quadrant D3,403,242524,814

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134003
B0136032
C0211822
D0144122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263671.069775%
B62631141.820214%
C6263129420.661025%
D62631041.660546%

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 8928 6266 5 5 0.06% 0.08%
B 8928 6266 22 22 0.25% 0.35%
C 8928 6265 1182 1182 13.24% 18.87%
D 8928 6266 38 38 0.43% 0.61%

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 0 254 54172 340.14 774 759 157.0
A 15 239 39402 246.08 774 759 157.0
A 13 248 19057 116.52 774 759 157.0
B 4 80 52499 347.19 788 770 149.0
B 10 16 40791 268.61 788 770 149.0
B 4 239 21204 137.15 788 770 149.0
C 9 68 3096541 21030.64 634 637 147.2
C 1 16 156609 1059.53 634 637 147.2
C 13 61 4702 27.61 634 637 147.2
D 5 233 212919 1150.76 753 731 184.4
D 1 52 189942 1026.15 753 731 184.4
D 12 233 61592 330.07 753 731 184.4

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