ASTROSAT CZTI

Data Quality Report

Orbit 41695

Creation date: 2024-06-27T22:31:42.235291
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/AS1A12_035T02_9000005690_41695cztM0_level2.fits modeM0/AS1A12_035T02_9000005690_41695cztM0_level2_quad_clean.evt
Size (bytes)326,105,28088,355,520
Size311.0 MB 84.3 MB
Events in quadrant A2,833,497603,593
Events in quadrant B2,566,768608,867
Events in quadrant C2,864,555561,682
Events in quadrant D3,391,035528,415

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116552
B0113582
C0119372
D0138642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5329130.243948%
B5329480.900732%
C53291733.246388%
D53291903.565397%

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 7122 5330 7 7 0.10% 0.13%
B 7122 5330 37 37 0.52% 0.69%
C 7122 5330 167 167 2.34% 3.13%
D 7122 5330 191 191 2.68% 3.58%

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 530924 4424.61 583 570 119.9
A 15 223 29386 240.4 583 570 119.9
A 13 248 12534 99.81 583 570 119.9
B 4 171 109225 966.44 580 564 112.4
B 5 255 99746 882.13 580 564 112.4
B 4 141 46085 404.87 580 564 112.4
C 0 10 460530 3497.43 560 564 131.5
C 15 214 214966 1630.24 560 564 131.5
C 15 159 4688 31.36 560 564 131.5
D 2 249 735618 5323.38 564 548 138.1
D 13 249 417119 3016.81 564 548 138.1
D 2 234 26858 190.54 564 548 138.1

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