ASTROSAT CZTI

Data Quality Report

Orbit 24929

Creation date: 2024-06-27T19:11:34.704217
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/AS1T03_205T01_9000003652_24929cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24929cztM0_level2_quad_clean.evt
Size (bytes)729,256,320147,441,600
Size695.5 MB 140.6 MB
Events in quadrant A3,632,3731,019,725
Events in quadrant B3,774,3081,034,364
Events in quadrant C8,983,754912,202
Events in quadrant D5,168,044956,950

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159472
B0162162
C0321172
D0205142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77832212.839522%
B77832503.212129%
C7783180623.204420%
D77836738.647051%

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 8043 7784 0 0 0.00% 0.00%
B 8043 7784 5 5 0.06% 0.06%
C 8043 7784 866 866 10.77% 11.13%
D 8043 7784 329 329 4.09% 4.23%

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 12805 62.87 940 918 189.1
A 3 137 8424 39.7 940 918 189.1
A 0 226 8091 37.94 940 918 189.1
B 0 189 29046 159.71 929 904 176.2
B 4 216 27811 152.7 929 904 176.2
B 12 111 21358 116.08 929 904 176.2
C 7 247 5190170 26316.06 856 861 197.2
C 2 16 217531 1098.78 856 861 197.2
C 14 238 135701 683.8 856 861 197.2
D 1 52 1407358 6497.4 904 877 216.5
D 7 238 175110 804.89 904 877 216.5
D 8 195 140245 643.83 904 877 216.5

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