ASTROSAT CZTI

Data Quality Report

Orbit 11217

Creation date: 2024-06-27T16:09:53.209297
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/AS1G08_075T01_9000001636_11217cztM0_level2.evt modeM0/AS1G08_075T01_9000001636_11217cztM0_level2_quad_clean.evt
Size (bytes)1,518,857,280225,230,400
Size1.4 GB 214.8 MB
Events in quadrant A13,871,5301,378,640
Events in quadrant B9,557,0141,455,734
Events in quadrant C8,432,5371,433,735
Events in quadrant D12,915,7511,303,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0559352391
B0417141338
C0388981335
D0525251532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494
B0485
C0484
D0483

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03819
B038010
C038111
D03828

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180569675.355560%
B181352481.367521%
C181241060.584860%
D181318964.941812%

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 25499 18167 513 513 2.01% 2.82%
B 25493 18240 81 81 0.32% 0.44%
C 25506 18229 33 33 0.13% 0.18%
D 25502 18238 709 709 2.78% 3.89%

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 8 5 2452449 5894.7 2084 2041 415.7
A 14 238 1408739 3383.95 2084 2041 415.7
A 8 15 1290000 3098.32 2084 2041 415.7
B 4 239 681809 1697.91 2154 2104 400.3
B 15 204 163601 403.42 2154 2104 400.3
B 0 187 75008 182.11 2154 2104 400.3
C 4 254 130864 265.64 2106 2117 484.7
C 1 3 83713 168.35 2106 2117 484.7
C 13 61 15788 28.21 2106 2117 484.7
D 1 52 2788429 5758.71 2032 1983 483.9
D 5 222 445494 916.6 2032 1983 483.9
D 10 253 328101 673.98 2032 1983 483.9

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