ASTROSAT CZTI

Data Quality Report

Orbit 22479

Creation date: 2024-06-27T18:41:45.242541
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/AS1A07_144T02_9000003340_22479cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22479cztM0_level2_quad_clean.evt
Size (bytes)400,524,48062,153,280
Size382.0 MB 59.3 MB
Events in quadrant A3,385,753483,211
Events in quadrant B3,504,920495,844
Events in quadrant C895,07764
Events in quadrant D3,915,781468,028

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141422
B0144372
C062142
D0158643

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211941.513444%
B62121211.947843%
C62126212100.000000%
D62111772.849783%

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 7526 6211 0 0 0.00% 0.00%
B 7527 6212 8 8 0.11% 0.13%
C 7526 6211 0 0 0.00% 0.00%
D 7526 6211 72 72 0.96% 1.16%

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 3 1 35534 199.81 870 854 173.6
A 13 254 10040 52.93 870 854 173.6
A 0 226 7549 38.57 870 854 173.6
B 15 33 47545 286.12 870 852 163.2
B 0 229 18861 110.35 870 852 163.2
B 4 173 18728 109.54 870 852 163.2
C 7 119 882725 625068.18 2 2 1.4
C 7 226 1820 1287.35 2 2 1.4
C 14 238 1092 771.84 2 2 1.4
D 1 52 414620 2000.01 854 833 206.9
D 12 235 78127 373.59 854 833 206.9
D 12 227 66650 318.12 854 833 206.9

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