ASTROSAT CZTI

Data Quality Report

Orbit 00581

Creation date: 2024-06-27T14:00:06.723818
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_118T02_9000000082_00581cztM0_level2.evt modeM0/AS1P01_118T02_9000000082_00581cztM0_level2_quad_clean.evt
Size (bytes)851,927,04051,785,280
Size812.5 MB 49.4 MB
Events in quadrant A6,426,532302,207
Events in quadrant B6,494,633305,459
Events in quadrant C5,821,403304,362
Events in quadrant D6,712,792291,195

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227993
B0230032
C0209742
D0236272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520170.134590%
B5201150.288406%
C520160.115362%
D5201180.346087%

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 9510 5203 125 125 1.31% 2.40%
B 9510 5203 111 111 1.17% 2.13%
C 9510 5203 69 69 0.73% 1.33%
D 9510 5203 228 228 2.40% 4.38%

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 0 149 66030 178.21 1627 1611 361.5
A 0 69 38660 102.49 1627 1611 361.5
A 0 238 24208 62.51 1627 1611 361.5
B 7 221 223444 578.44 1611 1625 383.5
B 0 230 51643 130.43 1611 1625 383.5
B 15 185 17170 40.54 1611 1625 383.5
C 1 1 48024 114.7 1451 1500 405.6
C 15 241 36415 86.08 1451 1500 405.6
C 10 19 20938 47.92 1451 1500 405.6
D 1 4 791788 1785.84 1414 1475 442.5
D 12 237 92490 205.66 1414 1475 442.5
D 13 216 85553 189.99 1414 1475 442.5

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