ASTROSAT CZTI

Data Quality Report

Orbit 36052

Creation date: 2022-08-10T01:39:56.238102
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_069T01_9000005158_36052cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36052cztM0_level2_quad_clean.evt
Size (bytes)1,553,192,640185,114,880
Size1.4 GB 176.5 MB
Events in quadrant A7,414,8261,209,924
Events in quadrant B10,106,5661,168,855
Events in quadrant C13,303,7141,127,632
Events in quadrant D15,154,7911,014,217

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323135
B0403074
C0497834
D0556194

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15716280.178162%
B157166454.104098%
C15716195812.458641%
D15716196512.503181%

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 21240 15720 0 0 0.00% 0.00%
B 21240 15720 402 402 1.89% 2.56%
C 21240 15720 1580 1580 7.44% 10.05%
D 21240 15720 1907 1907 8.98% 12.13%

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 10 83 437902 1208.04 1796 1764 361.0
A 13 254 25775 66.51 1796 1764 361.0
A 13 6 20016 50.56 1796 1764 361.0
B 5 236 1875425 5533.66 1757 1709 338.6
B 0 190 471810 1388.35 1757 1709 338.6
B 0 213 387959 1140.71 1757 1709 338.6
C 9 187 5078763 13441.28 1624 1633 377.7
C 0 207 821424 2170.33 1624 1633 377.7
C 15 214 615898 1626.22 1624 1633 377.7
D 12 235 5471517 13579.1 1640 1595 402.8
D 12 6 1102456 2732.89 1640 1595 402.8
D 12 17 452143 1118.49 1640 1595 402.8

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