ASTROSAT CZTI

Data Quality Report

Orbit 48021

Creation date: 2024-08-14T23:25:13.175911
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/AS1A13_053T01_9000006388_48021cztM0_level2.fits modeM0/AS1A13_053T01_9000006388_48021cztM0_level2_quad_clean.evt
Size (bytes)1,732,544,640377,475,840
Size1.6 GB 360.0 MB
Events in quadrant A25,411,0092,421,646
Events in quadrant B11,867,3782,530,738
Events in quadrant C12,259,6032,492,941
Events in quadrant D12,711,6402,304,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04960
B04960
C04960
D04960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0936573
B0530693
C0546063
D0557313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2438414826.077756%
B243847953.260335%
C243846232.554954%
D243855972.448226%

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 26089 24387 391 391 1.50% 1.60%
B 26089 24386 147 147 0.56% 0.60%
C 26089 24386 226 226 0.87% 0.93%
D 26090 24387 235 235 0.90% 0.96%

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 13963998 25509.34 2633 2575 547.3
A 13 248 1170618 2134.17 2633 2575 547.3
A 14 235 65186 114.4 2633 2575 547.3
B 5 255 532479 1028.21 2652 2568 515.4
B 0 200 485066 936.21 2652 2568 515.4
B 4 171 93928 177.27 2652 2568 515.4
C 12 2 1288174 2085.87 2632 2642 616.3
C 15 208 238380 382.5 2632 2642 616.3
C 14 254 185640 296.93 2632 2642 616.3
D 13 29 698172 1045.44 2651 2561 665.4
D 7 67 347346 518.18 2651 2561 665.4
D 2 249 249373 370.93 2651 2561 665.4

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