ASTROSAT CZTI

Data Quality Report

Orbit 00121

Creation date: 2024-06-27T13:56:41.301604
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/AS1P01_003T01_9000000002_00121cztM0_level2.evt modeM0/AS1P01_003T01_9000000002_00121cztM0_level2_quad_clean.evt
Size (bytes)774,048,96046,733,760
Size738.2 MB 44.6 MB
Events in quadrant A5,743,324277,717
Events in quadrant B5,564,419283,162
Events in quadrant C5,270,317278,364
Events in quadrant D6,570,152264,085

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010816
B010713
C010614
D010717

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0171
D0171

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236483423
B0232223592
C0221943419
D0260913439

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A444960.134862%
B440890.204174%
C4403110.249830%
D44122204.986401%

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 6685 4580 161 161 2.41% 3.52%
B 6691 4554 90 90 1.35% 1.98%
C 6664 4551 107 107 1.61% 2.35%
D 6677 4567 564 564 8.45% 12.35%

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 13 174 70051 296.23 1407 1374 231.8
A 13 65 51919 218.02 1407 1374 231.8
A 15 94 35278 146.24 1407 1374 231.8
B 0 169 40549 145.8 1380 1366 268.8
B 0 236 22783 79.69 1380 1366 268.8
B 4 238 21989 76.74 1380 1366 268.8
C 8 224 215580 614.53 1233 1279 348.7
C 0 203 58188 163.19 1233 1279 348.7
C 9 230 47533 132.64 1233 1279 348.7
D 12 207 585887 1719.15 1293 1302 340.0
D 2 107 158591 462.55 1293 1302 340.0
D 10 82 134866 392.78 1293 1302 340.0

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