ASTROSAT CZTI

Data Quality Report

Orbit 23095

Creation date: 2024-06-27T18:49:41.556776
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/AS1A07_049T01_9000003408_23095cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23095cztM0_level2_quad_clean.evt
Size (bytes)1,320,770,880150,120,000
Size1.2 GB 143.2 MB
Events in quadrant A14,862,722730,137
Events in quadrant B5,877,0991,043,186
Events in quadrant C6,545,495994,306
Events in quadrant D11,869,495911,215

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0524142
B0257242
C0277872
D0439522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12507371429.695371%
B125081220.975376%
C125072401.918925%
D12507252420.180699%

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 13782 12509 3279 3279 23.79% 26.21%
B 13783 12510 6 6 0.04% 0.05%
C 13782 12509 36 36 0.26% 0.29%
D 13782 12509 2476 2476 17.97% 19.79%

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 6 16 10139287 40857.48 1222 1191 248.1
A 13 254 15264 56.72 1222 1191 248.1
A 5 98 13590 49.97 1222 1191 248.1
B 6 36 40264 138.12 1468 1432 281.2
B 12 111 35131 119.86 1468 1432 281.2
B 11 111 32184 109.38 1468 1432 281.2
C 0 10 706282 2132.27 1413 1422 330.6
C 14 238 222802 669.7 1413 1422 330.6
C 0 207 66235 196.07 1413 1422 330.6
D 7 238 6226981 18626.35 1377 1339 334.2
D 1 52 216835 644.74 1377 1339 334.2
D 12 233 125634 371.88 1377 1339 334.2

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