ASTROSAT CZTI

Data Quality Report

Orbit 24118

Creation date: 2024-06-27T19:02:42.158823
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/AS1C05_002T09_9000003566_24118cztM0_level2.evt modeM0/AS1C05_002T09_9000003566_24118cztM0_level2_quad_clean.evt
Size (bytes)272,646,72044,876,160
Size260.0 MB 42.8 MB
Events in quadrant A1,765,864279,590
Events in quadrant B1,801,930282,070
Events in quadrant C1,778,909272,599
Events in quadrant D2,664,771269,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074841
B075361
C074611
D0103051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3591812.255639%
B35911032.868282%
C35911143.174603%
D35903259.052925%

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 4151 3592 0 0 0.00% 0.00%
B 4151 3592 0 0 0.00% 0.00%
C 4151 3591 0 0 0.00% 0.00%
D 4150 3590 220 220 5.30% 6.13%

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 13 254 5644 56.1 457 447 92.6
A 3 137 4285 41.43 457 447 92.6
A 0 226 4069 39.1 457 447 92.6
B 12 111 10738 115.77 452 441 88.9
B 11 111 9368 100.37 452 441 88.9
B 14 111 8472 90.3 452 441 88.9
C 14 238 68137 659.85 432 433 102.6
C 7 247 21091 201.34 432 433 102.6
C 13 61 3087 25.87 432 433 102.6
D 8 195 347096 3298.53 429 414 105.1
D 12 218 314180 2985.35 429 414 105.1
D 1 52 304325 2891.58 429 414 105.1

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