ASTROSAT CZTI

Data Quality Report

Orbit 17435

Creation date: 2024-06-27T17:36:29.936423
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/AS1A05_198T01_9000002578_17435cztM0_level2.evt modeM0/AS1A05_198T01_9000002578_17435cztM0_level2_quad_clean.evt
Size (bytes)1,016,294,400140,849,280
Size969.2 MB 134.3 MB
Events in quadrant A9,184,566836,270
Events in quadrant B6,572,735865,946
Events in quadrant C6,385,523836,840
Events in quadrant D7,755,684826,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358163
B0279003
C0267963
D0320433

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130248206.296069%
B130252511.927063%
C130252171.666027%
D130255013.846449%

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 14694 13025 550 550 3.74% 4.22%
B 14695 13028 54 54 0.37% 0.41%
C 14695 13027 0 0 0.00% 0.00%
D 14695 13027 279 279 1.90% 2.14%

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 10 253 3132435 10089.08 1539 1503 310.3
A 14 238 106656 338.84 1539 1503 310.3
A 14 237 15578 45.36 1539 1503 310.3
B 7 220 166439 541.87 1569 1527 304.3
B 0 189 83849 270.5 1569 1527 304.3
B 0 244 71843 231.05 1569 1527 304.3
C 5 218 229378 641.47 1503 1515 355.2
C 14 238 227813 637.06 1503 1515 355.2
C 5 219 35527 95.75 1503 1515 355.2
D 13 232 982732 2673.1 1508 1464 367.1
D 1 52 482946 1311.62 1508 1464 367.1
D 13 189 206869 559.55 1508 1464 367.1

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