ASTROSAT CZTI

Data Quality Report

Orbit 20504

Creation date: 2024-06-27T18:16:06.805303
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/AS1A05_115T01_9000003030_20504cztM0_level2.evt modeM0/AS1A05_115T01_9000003030_20504cztM0_level2_quad_clean.evt
Size (bytes)1,735,467,840239,852,160
Size1.6 GB 228.7 MB
Events in quadrant A9,222,2311,574,557
Events in quadrant B10,350,6431,575,361
Events in quadrant C9,088,1411,508,345
Events in quadrant D22,598,1081,277,503

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401924
B0426314
C0395114
D0798574

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192645012.600706%
B192645392.797965%
C192645012.600706%
D19264469524.371885%

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 21064 19264 31 31 0.15% 0.16%
B 21064 19264 42 42 0.20% 0.22%
C 21064 19264 0 0 0.00% 0.00%
D 21064 19264 4381 4381 20.80% 22.74%

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 5 16 199327 416.76 2329 2275 472.8
A 12 96 53871 109.12 2329 2275 472.8
A 13 254 22941 43.71 2329 2275 472.8
B 0 189 432453 972.45 2323 2258 442.4
B 0 197 311618 699.3 2323 2258 442.4
B 7 220 133399 296.44 2323 2258 442.4
C 14 238 343639 650.47 2234 2248 524.8
C 13 61 15780 25.78 2234 2248 524.8
C 0 207 12011 18.6 2234 2248 524.8
D 2 16 10012148 19487.68 2096 2033 513.7
D 7 38 1297147 2521.33 2096 2033 513.7
D 2 165 1128240 2192.5 2096 2033 513.7

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