ASTROSAT CZTI

Data Quality Report

Orbit 07495

Creation date: 2024-06-27T15:20:28.789276
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/AS1T01_156T01_9000001034_07495cztM0_level2.evt modeM0/AS1T01_156T01_9000001034_07495cztM0_level2_quad_clean.evt
Size (bytes)1,618,128,000293,264,640
Size1.5 GB 279.7 MB
Events in quadrant A11,178,2761,822,414
Events in quadrant B12,008,1021,854,231
Events in quadrant C11,022,5801,836,726
Events in quadrant D13,182,7681,726,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0488845
B0507794
C0487504
D0552387

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23884980.410317%
B238841320.552671%
C23884720.301457%
D238834071.704141%

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 38084 23889 2 2 0.01% 0.01%
B 38084 23889 11 11 0.03% 0.05%
C 38084 23889 3 3 0.01% 0.01%
D 38084 23888 317 317 0.83% 1.33%

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 34824 55.28 2874 2823 578.9
A 0 23 30679 48.12 2874 2823 578.9
A 0 226 29132 45.45 2874 2823 578.9
B 0 214 436121 800.22 2892 2828 541.5
B 0 219 96161 172.37 2892 2828 541.5
B 4 173 52561 91.85 2892 2828 541.5
C 1 16 23019 31.36 2806 2822 644.1
C 13 61 21576 29.12 2806 2822 644.1
C 8 128 20545 27.52 2806 2822 644.1
D 1 52 1193677 1726.99 2803 2718 689.6
D 2 14 310491 446.3 2803 2718 689.6
D 2 136 290980 418.0 2803 2718 689.6

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