ASTROSAT CZTI

Data Quality Report

Orbit 54236

Creation date: 2025-10-07T12:17:56.782238
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/AS1C09_004T08_9000006514_54236cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54236cztM0_level2_quad_clean.evt
Size (bytes)898,856,64062,628,480
Size857.2 MB 59.7 MB
Events in quadrant A7,739,963409,608
Events in quadrant B3,231,129606,746
Events in quadrant C7,673,696389,911
Events in quadrant D14,156,69165,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271531
B0140431
C0270621
D0462731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6086186430.627670%
B60851412.317173%
C6085190431.290058%
D6085539088.578472%

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 7056 6086 1515 1515 21.47% 24.89%
B 7055 6086 61 61 0.86% 1.00%
C 7055 6086 1733 1733 24.56% 28.48%
D 7055 6083 4376 4376 62.03% 71.94%

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 7 29 2823094 21219.06 537 525 133.0
A 12 17 2302899 17308.42 537 525 133.0
A 12 194 285463 2142.06 537 525 133.0
B 4 171 240652 1791.08 624 601 134.0
B 5 185 117730 873.93 624 601 134.0
B 8 234 116048 861.38 624 601 134.0
C 1 241 3945493 28342.82 506 501 139.2
C 12 2 641627 4606.17 506 501 139.2
C 15 198 516709 3708.7 506 501 139.2
D 8 176 12742839 195423.58 225 214 65.2
D 3 12 234864 3598.64 225 214 65.2
D 8 160 108828 1665.73 225 214 65.2

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