ASTROSAT CZTI

Data Quality Report

Orbit 10922

Creation date: 2024-06-27T16:05:41.962826
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/AS1A04_109T01_9000001578_10922cztM0_level2.evt modeM0/AS1A04_109T01_9000001578_10922cztM0_level2_quad_clean.evt
Size (bytes)733,953,600113,195,520
Size700.0 MB 108.0 MB
Events in quadrant A7,142,725681,955
Events in quadrant B5,496,786709,871
Events in quadrant C4,094,008720,799
Events in quadrant D4,877,037682,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271993
B0221822
C0185642
D0207172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91207578.300439%
B91203674.024123%
C9120680.745614%
D91201361.491228%

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 10725 9122 459 459 4.28% 5.03%
B 10725 9122 173 173 1.61% 1.90%
C 10725 9122 0 0 0.00% 0.00%
D 10725 9122 62 62 0.58% 0.68%

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 5 1587554 7505.72 1044 1020 211.4
A 13 251 503810 2378.64 1044 1020 211.4
A 15 223 503562 2377.47 1044 1020 211.4
B 4 239 1141572 5571.09 1072 1046 204.7
B 4 81 45943 219.31 1072 1046 204.7
B 15 204 42639 203.17 1072 1046 204.7
C 13 61 7827 27.83 1047 1047 243.6
C 8 222 6064 20.59 1047 1047 243.6
C 5 207 3728 11.0 1047 1047 243.6
D 1 52 393909 1575.56 1038 1007 249.4
D 8 195 241504 964.4 1038 1007 249.4
D 10 253 77244 305.71 1038 1007 249.4

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