ASTROSAT CZTI

Data Quality Report

Orbit 34763

Creation date: 2022-03-04T00:37:07.657086
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_004T01_9000004990_34763cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34763cztM0_level2_quad_clean.evt
Size (bytes)866,347,200131,927,040
Size826.2 MB 125.8 MB
Events in quadrant A4,881,284829,623
Events in quadrant B5,735,018836,916
Events in quadrant C5,312,876830,563
Events in quadrant D9,590,991763,140

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216233
B0239382
C0223372
D0359412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10617200.188377%
B10617630.593388%
C10617400.376754%
D106178157.676368%

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 13453 10619 2 2 0.01% 0.02%
B 13453 10619 27 27 0.20% 0.25%
C 13453 10619 21 21 0.16% 0.20%
D 13452 10618 613 613 4.56% 5.77%

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 69943 280.32 1226 1203 245.2
A 15 169 28238 110.25 1226 1203 245.2
A 13 6 19248 73.59 1226 1203 245.2
B 0 189 327231 1386.6 1227 1195 235.1
B 0 190 190110 803.44 1227 1195 235.1
B 5 172 178714 754.97 1227 1195 235.1
C 15 214 447818 1610.01 1194 1206 277.4
C 0 10 114279 407.62 1194 1206 277.4
C 14 67 66772 236.36 1194 1206 277.4
D 8 195 1811635 6411.02 1153 1119 282.4
D 2 250 1771500 6268.9 1153 1119 282.4
D 13 249 477490 1686.82 1153 1119 282.4

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