ASTROSAT CZTI

Data Quality Report

Orbit 11697

Creation date: 2024-06-27T16:17:03.665948
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/AS1A04_227T01_9000001724_11697cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11697cztM0_level2_quad_clean.evt
Size (bytes)772,966,08077,028,480
Size737.2 MB 73.5 MB
Events in quadrant A4,798,017483,673
Events in quadrant B4,829,666493,585
Events in quadrant C3,239,316502,096
Events in quadrant D10,090,307385,424

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187523
B0185462
C0139502
D0345192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66953925.855116%
B66952984.451083%
C6695721.075429%
D6695243936.430172%

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 7636 6697 143 143 1.87% 2.14%
B 7636 6697 110 110 1.44% 1.64%
C 7636 6697 11 11 0.14% 0.16%
D 7636 6697 2288 2288 29.96% 34.16%

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 8 5 1097810 6571.73 827 809 166.9
A 1 162 198044 1181.56 827 809 166.9
A 1 178 105301 625.97 827 809 166.9
B 10 244 1103412 6835.63 837 818 161.3
B 4 239 309435 1913.3 837 818 161.3
B 15 204 62003 379.32 837 818 161.3
C 14 234 53826 279.66 817 823 189.5
C 13 61 5957 27.09 817 823 189.5
C 7 247 1982 6.12 817 823 189.5
D 13 152 6870230 40227.83 714 697 170.8
D 7 80 208216 1215.23 714 697 170.8
D 8 195 162218 945.86 714 697 170.8

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