ASTROSAT CZTI

Data Quality Report

Orbit 01163

Creation date: 2024-06-27T14:08:29.175530
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/AS1P01_997T03_9000000216_01163cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01163cztM0_level2_quad_clean.evt
Size (bytes)1,183,417,920110,701,440
Size1.1 GB 105.6 MB
Events in quadrant A8,974,845726,509
Events in quadrant B9,224,759722,726
Events in quadrant C8,928,998694,536
Events in quadrant D8,218,290691,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319403
B0326602
C0318162
D0297742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7438110.147889%
B7438170.228556%
C7438130.174778%
D7438220.295778%

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 7603 7440 253 253 3.33% 3.40%
B 7603 7440 271 271 3.56% 3.64%
C 7602 7438 211 211 2.78% 2.84%
D 7602 7439 193 193 2.54% 2.59%

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 12 243 197034 353.76 2285 2299 550.5
A 11 79 9201 12.54 2285 2299 550.5
A 13 9 8314 10.93 2285 2299 550.5
B 6 53 49027 83.2 2377 2386 560.6
B 0 191 44011 74.26 2377 2386 560.6
B 0 230 27598 44.98 2377 2386 560.6
C 15 241 345523 565.35 2178 2255 607.2
C 3 111 34422 52.98 2178 2255 607.2
C 3 79 32700 50.14 2178 2255 607.2
D 13 73 56216 81.58 2135 2211 662.0
D 13 252 56124 81.44 2135 2211 662.0
D 10 125 47829 68.91 2135 2211 662.0

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