ASTROSAT CZTI

Data Quality Report

Orbit 15886

Creation date: 2024-06-27T17:14:46.307013
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_143T01_9000002344_15886cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15886cztM0_level2_quad_clean.evt
Size (bytes)914,253,120135,682,560
Size871.9 MB 129.4 MB
Events in quadrant A6,227,834819,482
Events in quadrant B6,306,583839,217
Events in quadrant C8,401,417781,654
Events in quadrant D5,897,197794,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267703
B0265862
C0330662
D0263742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126312211.749664%
B126311581.250891%
C126317495.929855%
D126311301.029214%

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 13897 12632 62 62 0.45% 0.49%
B 13897 12632 8 8 0.06% 0.06%
C 13897 12632 382 382 2.75% 3.02%
D 13897 12632 17 17 0.12% 0.13%

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 15 239 381698 1236.14 1508 1470 307.6
A 7 16 44488 139.85 1508 1470 307.6
A 0 226 13288 38.42 1508 1470 307.6
B 4 173 83144 281.26 1511 1468 290.4
B 4 216 77958 263.4 1511 1468 290.4
B 3 209 40621 134.83 1511 1468 290.4
C 9 236 2476746 7377.08 1427 1432 335.5
C 14 238 219446 649.74 1427 1432 335.5
C 3 233 75299 220.14 1427 1432 335.5
D 12 218 231466 639.25 1476 1432 359.8
D 2 234 48232 130.05 1476 1432 359.8
D 10 70 33551 89.26 1476 1432 359.8

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