ASTROSAT CZTI

Data Quality Report

Orbit 34630

Creation date: 2022-02-23T11:48:56.280920
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/AS1T05_008T01_9000004956_34630cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34630cztM0_level2_quad_clean.evt
Size (bytes)495,325,44083,678,400
Size472.4 MB 79.8 MB
Events in quadrant A2,710,533542,238
Events in quadrant B3,944,762533,488
Events in quadrant C3,096,282541,160
Events in quadrant D4,853,547509,104

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119333
B0155112
C0126612
D0183842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A583840.068517%
B58383365.755396%
C5838631.079137%
D58382424.145255%

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 7150 5839 0 0 0.00% 0.00%
B 7150 5839 193 193 2.70% 3.31%
C 7150 5839 37 37 0.52% 0.63%
D 7150 5839 170 170 2.38% 2.91%

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 49329 354.26 678 665 137.4
A 13 6 19242 135.23 678 665 137.4
A 13 254 11201 76.7 678 665 137.4
B 5 172 908618 7061.39 663 646 128.6
B 4 171 151122 1170.27 663 646 128.6
B 4 232 132551 1025.84 663 646 128.6
C 15 214 242710 1568.21 655 660 154.3
C 0 10 154913 999.39 655 660 154.3
C 14 67 113696 732.35 655 660 154.3
D 8 195 1340369 7724.82 644 629 173.4
D 13 249 191034 1097.86 644 629 173.4
D 7 223 135514 777.74 644 629 173.4

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