ASTROSAT CZTI

Data Quality Report

Orbit 36964

Creation date: 2024-06-27T21:33:39.958688
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/AS1C07_001T10_9000005252_36964cztM0_level2.evt modeM0/AS1C07_001T10_9000005252_36964cztM0_level2_quad_clean.evt
Size (bytes)828,017,280177,701,760
Size789.7 MB 169.5 MB
Events in quadrant A5,692,1361,181,297
Events in quadrant B6,843,7771,163,794
Events in quadrant C5,818,1091,167,874
Events in quadrant D5,997,7341,127,319

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237424
B0273293
C0239603
D0251533

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10713900.840101%
B107135405.040605%
C107131060.989452%
D107132041.904229%

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 13579 10715 57 57 0.42% 0.53%
B 13579 10715 320 320 2.36% 2.99%
C 13579 10715 88 88 0.65% 0.82%
D 13579 10715 183 183 1.35% 1.71%

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 15 237 484402 2027.72 1183 1160 238.3
A 10 83 441698 1848.53 1183 1160 238.3
A 12 189 108795 451.64 1183 1160 238.3
B 5 184 1490698 6762.33 1162 1133 220.3
B 0 221 111865 502.7 1162 1133 220.3
B 4 171 103707 465.67 1162 1133 220.3
C 15 214 468862 1759.03 1150 1157 265.9
C 1 23 277353 1038.77 1150 1157 265.9
C 0 10 187271 699.97 1150 1157 265.9
D 10 253 273380 985.31 1150 1118 276.3
D 2 249 199332 717.33 1150 1118 276.3
D 13 249 133475 479.0 1150 1118 276.3

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