ASTROSAT CZTI

Data Quality Report

Orbit 36790

Creation date: 2024-06-27T21:31:42.047334
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/AS1A11_083T01_9000005242_36790cztM0_level2.evt modeM0/AS1A11_083T01_9000005242_36790cztM0_level2_quad_clean.evt
Size (bytes)1,475,527,680106,755,840
Size1.4 GB 101.8 MB
Events in quadrant A5,262,300749,608
Events in quadrant B26,347,229316,564
Events in quadrant C5,831,972734,375
Events in quadrant D6,537,730702,234

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224493
B0854712
C0238132
D0265962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10508680.647126%
B10508972092.500952%
C105081151.094404%
D105082782.645603%

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 13282 10510 45 45 0.34% 0.43%
B 13282 10508 9478 9478 71.36% 90.20%
C 13282 10509 96 96 0.72% 0.91%
D 13282 10510 225 225 1.69% 2.14%

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 375716 1557.64 1183 1158 240.5
A 13 248 197593 816.89 1183 1158 240.5
A 9 143 58339 237.79 1183 1158 240.5
B 12 1 23698866 264533.28 469 457 89.6
B 4 171 343414 3828.25 469 457 89.6
B 5 172 92431 1026.65 469 457 89.6
C 14 254 502546 1873.38 1152 1161 267.6
C 15 214 473976 1766.63 1152 1161 267.6
C 0 207 267104 993.67 1152 1161 267.6
D 12 227 483193 1739.28 1146 1115 277.2
D 13 249 475006 1709.74 1146 1115 277.2
D 2 153 196169 703.73 1146 1115 277.2

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