ASTROSAT CZTI

Data Quality Report

Orbit 12403

Creation date: 2024-06-27T16:26:45.754120
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_083T02_9000001840_12403cztM0_level2.evt modeM0/AS1G08_083T02_9000001840_12403cztM0_level2_quad_clean.evt
Size (bytes)1,705,109,760298,336,320
Size1.6 GB 284.5 MB
Events in quadrant A15,582,1691,873,484
Events in quadrant B12,249,7201,940,909
Events in quadrant C10,012,2991,909,415
Events in quadrant D12,303,7621,790,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0619186
B0508685
C0451665
D0516795

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A221065762.605627%
B221063961.791369%
C22106490.221659%
D221063571.614946%

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 26747 22110 167 167 0.62% 0.76%
B 26747 22109 237 237 0.89% 1.07%
C 26747 22111 6 6 0.02% 0.03%
D 26747 22111 355 355 1.33% 1.61%

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 13 251 2165190 4123.75 2609 2562 524.4
A 1 162 1079918 2054.33 2609 2562 524.4
A 1 178 626888 1190.48 2609 2562 524.4
B 4 239 1511419 3065.45 2637 2579 492.2
B 0 219 120799 240.18 2637 2579 492.2
B 0 230 108042 214.26 2637 2579 492.2
C 15 208 45069 72.39 2554 2567 587.1
C 13 61 18919 27.85 2554 2567 587.1
C 14 234 10783 13.99 2554 2567 587.1
D 10 50 830542 1385.09 2519 2449 597.9
D 10 199 631900 1052.84 2519 2449 597.9
D 1 52 403602 670.98 2519 2449 597.9

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