ASTROSAT CZTI

Data Quality Report

Orbit 28207

Creation date: 2024-06-27T19:49:10.581855
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_045T09_9000004072_28207cztM0_level2.evt modeM0/AS1A10_045T09_9000004072_28207cztM0_level2_quad_clean.evt
Size (bytes)489,179,52071,605,440
Size466.5 MB 68.3 MB
Events in quadrant A3,363,307431,990
Events in quadrant B3,355,224436,395
Events in quadrant C3,421,797422,004
Events in quadrant D4,223,641414,624

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143680
B0142840
C0144330
D0170840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6632360.542823%
B6632630.949940%
C6632971.462606%
D66321482.231604%

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 7702 6633 2 2 0.03% 0.03%
B 7702 6632 2 2 0.03% 0.03%
C 7702 6633 0 0 0.00% 0.00%
D 7702 6632 74 74 0.96% 1.12%

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 94898 556.45 840 823 169.1
A 12 194 21164 120.32 840 823 169.1
A 13 254 9751 52.81 840 823 169.1
B 0 183 30460 187.18 832 811 158.4
B 12 111 19932 120.71 832 811 158.4
B 11 111 18215 109.87 832 811 158.4
C 14 238 130692 688.96 812 817 188.5
C 3 233 109640 577.29 812 817 188.5
C 15 208 8410 40.28 812 817 188.5
D 1 52 674294 3496.12 812 789 192.6
D 8 195 197942 1023.41 812 789 192.6
D 2 250 76059 390.72 812 789 192.6

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