ASTROSAT CZTI

Data Quality Report

Orbit 17761

Creation date: 2024-06-27T17:41:27.993282
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/AS1T03_070T09_9000002648_17761cztM0_level2.evt modeM0/AS1T03_070T09_9000002648_17761cztM0_level2_quad_clean.evt
Size (bytes)377,432,64057,064,320
Size359.9 MB 54.4 MB
Events in quadrant A2,561,280344,606
Events in quadrant B2,786,611351,917
Events in quadrant C2,811,371327,358
Events in quadrant D2,904,827326,812

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110731
B0116071
C0115981
D0122901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5382140.260126%
B5382450.836120%
C53821162.155333%
D53821312.434039%

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 6702 5383 1 1 0.01% 0.02%
B 6702 5383 2 2 0.03% 0.04%
C 6702 5383 38 38 0.57% 0.71%
D 6702 5383 117 117 1.75% 2.17%

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 4 2 11372 81.01 662 647 132.4
A 0 226 5559 37.1 662 647 132.4
A 3 137 4840 31.67 662 647 132.4
B 0 219 85541 669.09 666 651 126.9
B 0 230 48010 373.27 666 651 126.9
B 7 220 25027 192.13 666 651 126.9
C 4 254 187333 1264.19 632 637 147.7
C 14 238 98888 665.3 632 637 147.7
C 5 218 42199 281.43 632 637 147.7
D 7 238 441254 2693.17 629 613 163.6
D 2 152 52619 317.85 629 613 163.6
D 2 234 20471 121.37 629 613 163.6

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