ASTROSAT CZTI

Data Quality Report

Orbit 11628

Creation date: 2024-06-27T16:16:07.342136
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_198T01_9000001708_11628cztM0_level2.evt modeM0/AS1A04_198T01_9000001708_11628cztM0_level2_quad_clean.evt
Size (bytes)727,344,00094,956,480
Size693.6 MB 90.6 MB
Events in quadrant A6,952,344603,204
Events in quadrant B4,358,918635,619
Events in quadrant C3,255,119628,888
Events in quadrant D6,960,363491,618

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258132
B0178701
C0150381
D0257131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A740383911.333243%
B74032233.012292%
C7403110.148588%
D7403139118.789680%

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 7784 7405 517 517 6.64% 6.98%
B 7784 7405 97 97 1.25% 1.31%
C 7784 7405 0 0 0.00% 0.00%
D 7784 7405 1261 1261 16.20% 17.03%

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 3348742 19430.5 825 803 172.3
A 1 162 153723 887.51 825 803 172.3
A 1 178 90505 520.61 825 803 172.3
B 4 239 840431 5074.97 853 831 165.4
B 11 51 77959 466.2 853 831 165.4
B 15 204 54243 322.85 853 831 165.4
C 8 128 11165 53.43 829 832 193.4
C 13 61 6219 27.85 829 832 193.4
C 8 112 6121 27.35 829 832 193.4
D 7 80 3725166 21113.11 729 708 176.4
D 1 52 223676 1263.96 729 708 176.4
D 13 104 79717 447.88 729 708 176.4

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