ASTROSAT CZTI

Data Quality Report

Orbit 34628

Creation date: 2022-02-23T11:36:13.063013
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_34628cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34628cztM0_level2_quad_clean.evt
Size (bytes)478,339,20061,649,280
Size456.2 MB 58.8 MB
Events in quadrant A2,546,689384,268
Events in quadrant B3,359,896370,760
Events in quadrant C2,950,427382,136
Events in quadrant D5,263,498351,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110373
B0132822
C0117892
D0195242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540070.129630%
B54002514.648148%
C5400691.277778%
D54003015.574074%

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 7164 5401 0 0 0.00% 0.00%
B 7164 5401 178 178 2.48% 3.30%
C 7164 5401 46 46 0.64% 0.85%
D 7164 5401 262 262 3.66% 4.85%

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 46925 361.18 638 624 128.2
A 13 6 12576 93.23 638 624 128.2
A 13 254 10406 76.31 638 624 128.2
B 5 172 781167 6503.52 624 608 120.0
B 0 189 48004 394.9 624 608 120.0
B 4 232 21329 172.64 624 608 120.0
C 15 214 225582 1567.37 614 619 143.5
C 0 10 200455 1392.3 614 619 143.5
C 14 67 113170 784.17 614 619 143.5
D 8 195 1663706 11133.84 607 589 149.4
D 7 223 283523 1894.12 607 589 149.4
D 13 249 253610 1693.86 607 589 149.4

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