ASTROSAT CZTI

Data Quality Report

Orbit 23564

Creation date: 2024-06-27T18:56:11.006452
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_011T01_9000003482_23564cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23564cztM0_level2_quad_clean.evt
Size (bytes)1,898,043,840414,734,400
Size1.8 GB 395.5 MB
Events in quadrant A12,602,7132,716,535
Events in quadrant B13,698,9112,782,692
Events in quadrant C14,145,1092,642,320
Events in quadrant D15,225,9912,578,701

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0552673
B0584433
C0595733
D0638953

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A267991160.432852%
B268003401.268657%
C268007392.757463%
D268006742.514925%

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 32414 26803 2 2 0.01% 0.01%
B 32415 26801 93 93 0.29% 0.35%
C 32415 26803 376 376 1.16% 1.40%
D 32415 26802 564 564 1.74% 2.10%

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 65054 95.94 3248 3188 644.9
A 13 254 43558 62.6 3248 3188 644.9
A 3 137 28189 38.77 3248 3188 644.9
B 0 189 490203 804.66 3235 3156 605.3
B 3 64 146466 236.76 3235 3156 605.3
B 4 216 118560 190.66 3235 3156 605.3
C 10 9 1426249 2012.91 3092 3116 707.0
C 14 238 497571 699.37 3092 3116 707.0
C 0 10 63113 84.86 3092 3116 707.0
D 1 52 1915135 2555.32 3107 3020 748.3
D 12 233 1018635 1357.25 3107 3020 748.3
D 7 238 206445 271.85 3107 3020 748.3

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