ASTROSAT CZTI

Data Quality Report

Orbit 08355

Creation date: 2024-06-27T15:31:32.673565
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/AS1G07_046T01_9000001162_08355cztM0_level2.evt modeM0/AS1G07_046T01_9000001162_08355cztM0_level2_quad_clean.evt
Size (bytes)336,153,60059,618,880
Size320.6 MB 56.9 MB
Events in quadrant A2,649,635370,231
Events in quadrant B2,440,363375,056
Events in quadrant C2,240,206375,457
Events in quadrant D2,537,950362,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108473
B0102602
C097542
D0107072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45742705.902930%
B45742124.634893%
C45741693.694797%
D45742104.591167%

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 4749 4576 52 52 1.09% 1.14%
B 4749 4576 10 10 0.21% 0.22%
C 4749 4576 0 0 0.00% 0.00%
D 4749 4576 16 16 0.34% 0.35%

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 15 239 241364 1987.87 580 566 121.1
A 15 236 122664 1007.96 580 566 121.1
A 14 111 23398 188.49 580 566 121.1
B 0 214 76077 648.76 584 570 116.4
B 10 16 30009 252.94 584 570 116.4
B 4 81 26828 225.61 584 570 116.4
C 8 128 6314 42.2 571 572 136.1
C 13 61 4300 27.4 571 572 136.1
C 8 112 3493 21.47 571 572 136.1
D 2 152 251089 1755.82 567 551 142.7
D 2 14 53238 369.24 567 551 142.7
D 7 71 33680 232.17 567 551 142.7

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