ASTROSAT CZTI

Data Quality Report

Orbit 27988

Creation date: 2024-06-27T19:46:47.171432
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/AS1A10_065T03_9000004040_27988cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27988cztM0_level2_quad_clean.evt
Size (bytes)940,524,480169,436,160
Size897.0 MB 161.6 MB
Events in quadrant A6,131,7401,109,332
Events in quadrant B6,130,3911,090,386
Events in quadrant C6,281,8101,022,402
Events in quadrant D9,071,7521,022,443

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263310
B0261900
C0265530
D0351940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12823550.428917%
B12822700.545937%
C128221621.263453%
D128224973.876150%

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 14593 12825 0 0 0.00% 0.00%
B 14592 12823 2 2 0.01% 0.02%
C 14592 12824 21 21 0.14% 0.16%
D 14592 12824 400 400 2.74% 3.12%

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 16 32537 97.81 1576 1544 316.9
A 13 254 18532 53.61 1576 1544 316.9
A 8 192 16432 46.98 1576 1544 316.9
B 12 111 38866 124.97 1555 1511 298.9
B 11 111 35753 114.56 1555 1511 298.9
B 14 111 33717 107.74 1555 1511 298.9
C 14 238 242706 684.0 1500 1512 352.6
C 10 22 74874 208.05 1500 1512 352.6
C 15 208 69825 193.73 1500 1512 352.6
D 1 52 1588904 4450.21 1502 1466 356.7
D 7 80 1097419 3072.39 1502 1466 356.7
D 8 195 442969 1237.71 1502 1466 356.7

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