ASTROSAT CZTI

Data Quality Report

Orbit 07281

Creation date: 2024-06-27T15:17:55.452925
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/AS1G06_154T03_9000000996_07281cztM0_level2.evt modeM0/AS1G06_154T03_9000000996_07281cztM0_level2_quad_clean.evt
Size (bytes)841,014,720163,146,240
Size802.1 MB 155.6 MB
Events in quadrant A5,812,2781,032,361
Events in quadrant B6,093,7351,071,454
Events in quadrant C5,708,4461,036,817
Events in quadrant D7,036,773964,018

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253024
B0259653
C0251173
D0294983

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12089740.612127%
B120891401.158078%
C12089550.454959%
D120892341.935644%

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 16024 12092 0 0 0.00% 0.00%
B 16024 12091 5 5 0.03% 0.04%
C 16024 12092 1 1 0.01% 0.01%
D 16024 12092 182 182 1.14% 1.51%

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 8 15 57563 185.45 1488 1462 302.5
A 0 226 14207 42.13 1488 1462 302.5
A 15 234 14148 41.94 1488 1462 302.5
B 0 214 73361 252.51 1512 1476 284.7
B 4 173 50793 173.23 1512 1476 284.7
B 4 81 41883 141.94 1512 1476 284.7
C 9 68 19970 55.7 1452 1461 332.3
C 1 16 14612 39.58 1452 1461 332.3
C 13 61 11519 30.27 1452 1461 332.3
D 2 33 662642 1902.42 1428 1384 347.6
D 2 216 377708 1082.67 1428 1384 347.6
D 13 105 180525 515.38 1428 1384 347.6

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