ASTROSAT CZTI

Data Quality Report

Orbit 20190523_C04_001T01_9000002948_level2

Creation date: 2019-05-28T10:20:02.629179
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C04_001T01_9000002948cztM0_level2_bc.evt modeM0/AS1C04_001T01_9000002948cztM0_level2_quad_clean.evt
Size (bytes)3,723,312,9601,650,893,760
Size3.5 GB 1.5 GB
Events in quadrant A20,693,21311,062,507
Events in quadrant B20,799,60411,342,030
Events in quadrant C28,259,58310,901,241
Events in quadrant D36,742,78010,393,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018680
B018680
C018680
D018680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01950910
B01976160
C02199580
D02539470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9204717001.846883%
B9204713511.467728%
C9204730633.327648%
D9204754175.885037%

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 107126 92044 374 374 0.35% 0.41%
B 107126 92043 44 44 0.04% 0.05%
C 107126 92044 295 295 0.28% 0.32%
D 107126 92046 1233 1233 1.15% 1.34%

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 0 23 1969289 1921.62 4699 4620 1022.4
A 11 29 162032 153.96 4699 4620 1022.4
A 5 16 147285 139.54 4699 4620 1022.4
B 7 220 887505 982.73 4790 4674 898.3
B 3 64 317487 348.21 4790 4674 898.3
B 4 216 278846 305.2 4790 4674 898.3
C 3 233 10055071 9258.49 4597 4582 1085.5
C 7 247 286549 259.75 4597 4582 1085.5
C 3 247 80042 69.51 4597 4582 1085.5
D 1 52 13645035 12602.36 4588 4427 1082.4
D 7 238 1343068 1236.75 4588 4427 1082.4
D 9 1 913110 839.52 4588 4427 1082.4

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