ASTROSAT CZTI

Data Quality Report

Orbit 07625

Creation date: 2024-06-27T15:21:56.853444
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/AS1A02_178T01_9000001048_07625cztM0_level2.evt modeM0/AS1A02_178T01_9000001048_07625cztM0_level2_quad_clean.evt
Size (bytes)492,742,08075,654,720
Size469.9 MB 72.1 MB
Events in quadrant A3,431,012477,380
Events in quadrant B2,880,242490,049
Events in quadrant C5,231,150458,552
Events in quadrant D2,988,138460,366

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139982
B0121971
C0194421
D0126531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5782761.314424%
B5782681.176064%
C57824447.679004%
D5782821.418194%

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 6942 5782 0 0 0.00% 0.00%
B 6942 5783 8 8 0.12% 0.14%
C 6942 5782 328 328 4.72% 5.67%
D 6942 5782 21 21 0.30% 0.36%

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 13 251 694845 4834.62 707 692 143.6
A 13 14 9538 61.61 707 692 143.6
A 0 226 6839 42.81 707 692 143.6
B 0 229 59894 436.24 709 691 135.7
B 4 239 31149 224.43 709 691 135.7
B 0 214 28885 207.75 709 691 135.7
C 9 68 2546735 16178.66 678 682 157.4
C 8 229 36098 225.04 678 682 157.4
C 13 61 5189 28.64 678 682 157.4
D 2 152 167730 986.31 694 675 169.4
D 2 14 133529 784.38 694 675 169.4
D 3 14 18567 105.64 694 675 169.4

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