ASTROSAT CZTI

Data Quality Report

Orbit 35219

Creation date: 2022-04-03T18:42:49.164501
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/AS1C07_004T01_9000005052_35219cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35219cztM0_level2_quad_clean.evt
Size (bytes)651,516,48096,526,080
Size621.3 MB 92.1 MB
Events in quadrant A2,695,148697,627
Events in quadrant B7,756,933565,950
Events in quadrant C3,150,541681,979
Events in quadrant D5,791,704626,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109713
B0265552
C0124442
D0207262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499570.140140%
B4995196339.299299%
C49951112.222222%
D49954158.308308%

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 7118 4996 0 0 0.00% 0.00%
B 7117 4995 1418 1418 19.92% 28.39%
C 7118 4996 74 74 1.04% 1.48%
D 7118 4996 505 505 7.09% 10.11%

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 99083 754.77 656 646 130.4
A 8 144 34271 257.82 656 646 130.4
A 13 6 15944 117.3 656 646 130.4
B 5 236 5324601 51885.68 546 536 102.6
B 5 172 191076 1856.91 546 536 102.6
B 4 232 36006 345.67 546 536 102.6
C 0 10 241476 1716.15 619 626 140.3
C 15 214 211170 1500.21 619 626 140.3
C 0 207 172980 1228.09 619 626 140.3
D 8 195 2575013 17119.34 618 603 150.4
D 13 249 261647 1735.89 618 603 150.4
D 10 118 133908 886.45 618 603 150.4

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