ASTROSAT CZTI

Data Quality Report

Orbit 09902

Creation date: 2024-06-27T15:52:07.235016
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/AS1G07_046T01_9000001408_09902cztM0_level2.evt modeM0/AS1G07_046T01_9000001408_09902cztM0_level2_quad_clean.evt
Size (bytes)347,806,08068,967,360
Size331.7 MB 65.8 MB
Events in quadrant A2,571,669433,189
Events in quadrant B2,478,291443,651
Events in quadrant C2,405,534435,352
Events in quadrant D2,716,104405,152

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137482708
B0132892513
C0132172458
D0143522830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013220
B013121
C013224
D013220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145
B0143
C0146
D0145

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5283150.283930%
B5277120.227402%
C5280130.246212%
D524440.076278%

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 7500 5820 0 0 0.00% 0.00%
B 7523 5863 0 0 0.00% 0.00%
C 7581 5846 0 0 0.00% 0.00%
D 7509 5816 3 3 0.04% 0.05%

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 15 239 141460 1095.65 631 617 128.5
A 0 226 5734 39.81 631 617 128.5
A 12 194 4915 33.44 631 617 128.5
B 12 111 14209 111.2 634 620 122.2
B 11 111 11781 91.33 634 620 122.2
B 14 111 9855 75.57 634 620 122.2
C 9 221 11631 76.7 613 618 143.6
C 13 61 4649 28.08 613 618 143.6
C 14 67 1985 9.52 613 618 143.6
D 8 195 229421 1478.72 594 581 154.8
D 1 52 96736 621.34 594 581 154.8
D 2 16 82628 530.17 594 581 154.8

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