ASTROSAT CZTI

Data Quality Report

Orbit 33277

Creation date: 2024-06-27T20:46:58.199559
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/AS1T04_072T01_9000004780_33277cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33277cztM0_level2_quad_clean.evt
Size (bytes)515,946,24064,261,440
Size492.0 MB 61.3 MB
Events in quadrant A2,763,265414,803
Events in quadrant B3,772,550397,105
Events in quadrant C3,623,236396,825
Events in quadrant D5,114,340372,378

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110992
B0145591
C0141901
D0188991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5202100.192234%
B52022655.094195%
C5202781.499423%
D52023697.093426%

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 7175 5203 3 3 0.04% 0.06%
B 7175 5203 205 205 2.86% 3.94%
C 7175 5203 58 58 0.81% 1.11%
D 7175 5203 329 329 4.59% 6.32%

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 15 169 65854 472.65 695 682 137.9
A 13 254 11064 75.29 695 682 137.9
A 13 6 8717 58.27 695 682 137.9
B 5 172 891053 7066.9 676 660 126.0
B 0 219 174906 1382.96 676 660 126.0
B 0 190 16211 123.43 676 660 126.0
C 10 49 350843 2346.39 653 659 149.2
C 15 214 224964 1502.95 653 659 149.2
C 1 23 158296 1056.24 653 659 149.2
D 8 195 1160212 6686.65 641 631 173.4
D 2 250 814542 4693.37 641 631 173.4
D 2 249 291745 1678.69 641 631 173.4

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