ASTROSAT CZTI

Data Quality Report

Orbit 11882

Creation date: 2024-06-27T16:19:33.555032
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/AS1T01_209T01_9000001758_11882cztM0_level2.evt modeM0/AS1T01_209T01_9000001758_11882cztM0_level2_quad_clean.evt
Size (bytes)483,281,280109,080,000
Size460.9 MB 104.0 MB
Events in quadrant A3,503,240725,056
Events in quadrant B3,734,226741,330
Events in quadrant C2,913,596725,769
Events in quadrant D4,062,614676,870

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145253
B0152472
C0128922
D0160852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227520.835073%
B62271642.633692%
C6227340.546009%
D62271392.232215%

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 7523 6229 4 4 0.05% 0.06%
B 7523 6229 87 87 1.16% 1.40%
C 7523 6229 17 17 0.23% 0.27%
D 7523 6229 107 107 1.42% 1.72%

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 15 355641 2354.98 746 731 150.7
A 1 162 101817 670.75 746 731 150.7
A 1 178 53233 348.37 746 731 150.7
B 4 239 516487 3722.0 755 739 138.6
B 15 204 112129 803.87 755 739 138.6
B 15 33 44632 316.76 755 739 138.6
C 0 207 54868 322.75 726 728 167.7
C 1 16 26977 156.48 726 728 167.7
C 13 61 5565 28.84 726 728 167.7
D 8 195 432911 2542.68 710 690 170.0
D 5 222 299827 1759.77 710 690 170.0
D 10 50 204931 1201.51 710 690 170.0

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