ASTROSAT CZTI

Data Quality Report

Orbit 20190201_A05_019T01_9000002688_level2

Creation date: 2019-02-04T10:50:43.994947
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/AS1A05_019T01_9000002688cztM0_level2_bc.evt modeM0/AS1A05_019T01_9000002688cztM0_level2_quad_clean.evt
Size (bytes)5,187,058,5601,656,933,120
Size4.8 GB 1.5 GB
Events in quadrant A27,727,14610,954,955
Events in quadrant B28,727,91811,007,295
Events in quadrant C24,629,64810,383,214
Events in quadrant D67,716,9629,493,910

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02613170
B02648120
C02532380
D04022100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02050
B02050
C02050
D02050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024800
B024800
C024800
D024800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12180519031.562333%
B12180520001.641969%
C12180516891.386643%
D1218051434411.776200%

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 142095 121802 97 97 0.07% 0.08%
B 142095 121801 88 88 0.06% 0.07%
C 142095 121803 3 3 0.00% 0.00%
D 142095 121803 4846 4846 3.41% 3.98%

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 4 2 1883231 1314.27 6594 6473 1428.0
A 15 174 531284 367.52 6594 6473 1428.0
A 0 226 43958 26.25 6594 6473 1428.0
B 7 220 743842 585.39 6616 6445 1259.7
B 6 36 489195 383.24 6616 6445 1259.7
B 3 64 443498 346.96 6616 6445 1259.7
C 3 233 288526 194.17 6237 6210 1453.9
C 0 207 121773 79.48 6237 6210 1453.9
C 9 160 100088 64.57 6237 6210 1453.9
D 7 238 29658106 20801.98 6131 5913 1425.5
D 11 176 7755712 5436.74 6131 5913 1425.5
D 10 70 1897007 1326.66 6131 5913 1425.5

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