ASTROSAT CZTI

Data Quality Report

Orbit 24997

Creation date: 2024-06-27T19:12:30.535217
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/AS1A07_127T03_9000003662_24997cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_24997cztM0_level2_quad_clean.evt
Size (bytes)588,928,320100,733,760
Size561.6 MB 96.1 MB
Events in quadrant A3,415,090664,587
Events in quadrant B3,583,739684,295
Events in quadrant C6,255,389638,290
Events in quadrant D4,164,539633,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141432
B0147233
C0230232
D0166612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61631021.655038%
B61631492.417654%
C616374312.055817%
D6163981.590135%

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 8808 6165 0 0 0.00% 0.00%
B 8808 6165 7 7 0.08% 0.11%
C 8808 6165 238 238 2.70% 3.86%
D 8808 6165 28 28 0.32% 0.45%

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 13 254 9394 48.7 885 870 175.0
A 0 226 7534 38.08 885 870 175.0
A 3 137 7531 38.06 885 870 175.0
B 3 64 70452 424.32 886 868 164.0
B 4 80 19500 113.62 886 868 164.0
B 12 111 19047 110.86 886 868 164.0
C 7 247 2757356 14128.53 841 850 195.1
C 14 238 134744 686.28 841 850 195.1
C 0 10 44574 224.11 841 850 195.1
D 7 238 546994 2598.87 872 850 210.1
D 8 195 283339 1344.25 872 850 210.1
D 2 234 24803 113.98 872 850 210.1

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