ASTROSAT CZTI

Data Quality Report

Orbit 37876

Creation date: 2024-06-27T21:45:35.321226
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_001T12_9000005352_37876cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37876cztM0_level2_quad_clean.evt
Size (bytes)805,582,080138,677,760
Size768.3 MB 132.3 MB
Events in quadrant A5,657,031879,987
Events in quadrant B5,810,754879,174
Events in quadrant C5,458,863866,761
Events in quadrant D6,738,036824,483

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239764
B0246883
C0231363
D0277913

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10820270.249538%
B108202292.116451%
C10820650.600739%
D108203293.040665%

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 13599 10822 10 10 0.07% 0.09%
B 13599 10822 140 140 1.03% 1.29%
C 13599 10822 58 58 0.43% 0.54%
D 13599 10822 266 266 1.96% 2.46%

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 10 83 629847 2592.17 1202 1176 242.5
A 15 222 305458 1254.63 1202 1176 242.5
A 12 189 22398 87.5 1202 1176 242.5
B 5 172 713513 3166.97 1189 1159 224.9
B 0 189 191176 844.77 1189 1159 224.9
B 4 81 55916 243.44 1189 1159 224.9
C 15 214 451160 1655.02 1166 1171 271.9
C 14 254 266249 974.93 1166 1171 271.9
C 0 10 165004 602.56 1166 1171 271.9
D 2 250 553766 1936.72 1162 1128 285.3
D 2 249 312865 1092.48 1162 1128 285.3
D 1 52 256004 893.21 1162 1128 285.3

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