ASTROSAT CZTI

Data Quality Report

Orbit 36906

Creation date: 2024-06-27T21:33:04.865186
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/AS1C07_010T01_9000005246_36906cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36906cztM0_level2_quad_clean.evt
Size (bytes)1,812,499,200235,791,360
Size1.7 GB 224.9 MB
Events in quadrant A14,291,0981,769,212
Events in quadrant B4,289,97928,884
Events in quadrant C13,919,9531,744,950
Events in quadrant D20,446,5081,641,117

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05780
B05780
C05780
D05780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0604388
B0286857
C0584137
D0798127

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A283472250.793735%
B2834728347100.000000%
C28347630.222246%
D2834719086.730871%

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 38628 28353 144 144 0.37% 0.51%
B 38627 28346 2 2 0.01% 0.01%
C 38628 28353 55 55 0.14% 0.19%
D 38628 28353 1715 1715 4.44% 6.05%

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 985419 1533.39 3202 3138 640.6
A 15 223 613570 952.91 3202 3138 640.6
A 7 16 189922 291.58 3202 3138 640.6
B 12 243 3931588 280081.93 62 61 14.0
B 12 144 75699 5388.45 62 61 14.0
B 5 255 8569 606.11 62 61 14.0
C 15 214 1197706 1647.13 3125 3149 725.2
C 0 10 412080 563.86 3125 3149 725.2
C 0 207 75028 99.11 3125 3149 725.2
D 13 249 2959453 3946.3 3071 2991 749.2
D 12 233 1860742 2479.74 3071 2991 749.2
D 10 253 1111161 1479.19 3071 2991 749.2

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